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A lambda diode is an electronic circuit that combines a complementary pair of junction gated field effect transistors into a two-terminal device that exhibits
Lambda_diode
Two-terminal electronic component
Active rectification Diode-connected transistor Diode modelling Fast/ultrafast diode Flame rectification Lambda diode Lr-diode p–n junction Small-signal
Diode
Diode that works using quantum tunneling
against overcurrent. Avalanche diode Gunn diode IMPATT diode Lambda diode Resonant-tunneling diode Tunnel junction Zener diode US 3033714, issued 1962-05-08
Tunnel_diode
English-language poetry journal and small press
Diode Poetry Journal (stylized in all lowercase) is an English-language online poetry magazine founded in 2007 by poet and editor Patty Paine. The journal
Diode_Poetry_Journal
Property that an increasing voltage results in a decreasing current
type of negative resistance include the tunnel diode, resonant tunneling diode, lambda diode, Gunn diode, and dynatron oscillators. Current controlled
Negative_resistance
The laser diode rate equations model the electrical and optical performance of a laser diode. This system of ordinary differential equations relates the
Laser_diode_rate_equations
Optoelectronics component
A superluminescent diode (SLED or SLD) is an edge-emitting semiconductor light source based on superluminescence. It combines the high power and brightness
Superluminescent_diode
American poet and academic
Spork Press. 2018. Revenge of the Asian Woman. Diode Editions. 2019. ISBN 978-1-939728-26-5. BABE. Diode Editions. 2021. Return of the Chinese Femme. Deep
Dorothy_Chan
Interferometric technique
and applications based on the retro-injection effect in commercial laser diodes appeared in the scientific literature. In this type of interferometric configuration
Self-mixing_interferometry
American poet and novelist
Poetry. 2014. Sad Boy / Detective. Black Lawrence Press. 2015. Straight. Diode Editions. 2016. ISBN 9781939728074. All the Rage. Sibling Rivalry Press
Sam_Sax_(poet)
Imaging technique
Short-coherence-length light can be obtained using a superluminescent diode (SLD) with a broad spectral bandwidth or a broadly tunable laser with narrow
Optical_coherence_tomography
Scientific law describing absorption of light
underpins many laser absorption spectroscopy techniques, including tunable diode laser and quantum cascade laser absorption spectorscopy, which can be used
Beer–Lambert_law
Seventh letter in the Greek alphabet
the transistor is used as a temperature sensing device, e.g. the thermal "diode" transistor that is embedded within a computer's microprocessor. Power electronics
Eta
Measure of laser beam quality
has the lowest possible BPP, λ / π {\displaystyle \lambda /\pi } , where λ {\displaystyle \lambda } is the wavelength of the light. The ratio of the BPP
Beam_parameter_product
Range of light usable for photosynthesis
_{\lambda _{1}}^{\lambda _{2}}B(\lambda ,T)\,683\mathrm {~[lm/W]} \,y(\lambda )\,d\lambda }{\int _{\lambda _{1}}^{\lambda _{2}}B(\lambda ,T)\,d\lambda }}
Photosynthetically active radiation
Photosynthetically_active_radiation
Electronic circuit
fast nonlinear device, such as a step recovery diode. Microwave generators may use a step recovery diode impulse generator followed by a tunable YIG filter
Frequency_multiplier
2025 awards ceremony for LGBTQ+ literature
The finalists for the 37th Lambda Literary Awards, which honor works of LGBTQ+ literature published in 2024, were announced on July 30, 2025. The virtual
37th_Lambda_Literary_Awards
Type of magnetometer
{\displaystyle \lambda ={\frac {i_{c}L}{\Phi _{0}}}} where i c {\displaystyle i_{c}} is the critical current of the SQUID. Usually λ {\displaystyle \lambda } is
SQUID
Optical device
designs were quickly adopted for other types of lasers such as gas lasers, diode lasers, and more recently fiber lasers. Multiple-prism grating laser oscillators
Multiple-prism grating laser oscillator
Multiple-prism_grating_laser_oscillator
Near-field diffraction effect
196–205. doi:10.1080/14786448108626995. Okulov, A. Yu. (1993). "Scaling of diode-array-pumped solid-state lasers via self-imaging". Opt. Commun. 99 (5–6):
Talbot_effect
Harmonic oscillator whose parameters oscillate in time
of a semiconductor varactor diode connected to a resonant circuit or cavity resonator. It is driven by varying the diode's capacitance by applying a varying
Parametric_oscillator
Logarithm of ratio of incident to transmitted radiant power through a sample
}\,,\\A_{\lambda }&=\log _{10}{\frac {\Phi _{{\text{e}},\lambda }^{\text{i}}}{\Phi _{{\text{e}},\lambda }^{\text{t}}}}=-\log _{10}T_{\lambda }\,,\end{aligned}}}
Absorbance
\Delta \lambda } can be estimated by Δ λ / λ ≈ Λ / L {\displaystyle \Delta \lambda /\lambda \approx \Lambda /L} , where λ {\displaystyle \lambda } is the
Volume_hologram
American technology company
frequency stabilization, and was instrumental in the development of dye, diode-pumped solid-state lasers, and Ti-sapphire lasers in his roles at Coherent
Coherent,_Inc.
Theory in optics
m}}{\partial \lambda }}=H_{2,m}{\frac {\partial n_{m}}{\partial \lambda }}+(k_{1,m}k_{2,m})^{-1}{\bigg (}H_{1,m}{\frac {\partial n_{m}}{\partial \lambda }}\pm
Multiple-prism dispersion theory
Multiple-prism_dispersion_theory
emitters, the cavity modifies the spontaneous emission of light-emitting diodes (LED) improving their spectral purity and directivity. Optical communication
Resonant-cavity-enhanced photo detector
Resonant-cavity-enhanced_photo_detector
Chemical compound
10^{-8}f}{\lambda ^{2}-(0.20692-0.89\times 10^{-8}f)^{2}}}+{\frac {100+2.657\times 10^{-5}f}{\lambda ^{2}-11.34927^{2}}}-1.5334\times 10^{-2}\lambda ^{2},}
Lithium_niobate
connected transistors only one may have its collector connected to its base in diode connection and the input current set by the collector potential but the
Translinear_circuit
A disk laser or active mirror (Fig.1) is a type of diode pumped solid-state laser characterized by a heat sink and laser output that are realized on opposite
Disk_laser
Type of electronic noise
current crosses a potential barrier such as a p-n junction. A semiconductor diode can be used as a noise source by passing a particular direct current through
Shot_noise
Aspect of laser science
"How to (Maybe) Measure Laser Beam Quality". In Dowley, M. (ed.). DPSS (Diode Pumped Solid State) Lasers: Applications and Issues. OSA Trends in Optics
Laser_beam_quality
Device that approximates natural sunlight
_{E_{SIM}(\lambda )>0.1\cdot E_{AM1.5}(\lambda )}E_{AM1.5}(\lambda )\cdot \Delta \lambda {\Bigg /}\sum _{\text{300 nm}}^{\text{1200 nm}}E_{AM1.5}(\lambda )\cdot
Solar_simulator
Optical property
number F is defined as F = a 2 L λ , {\displaystyle F={\frac {a^{2}}{L\lambda }},} where a {\displaystyle a} is the characteristic size (e.g. radius)
Fresnel_number
Laser using electron beam in vacuum as gain medium
radiation, λ r {\displaystyle \lambda _{r}} , is given by λ r = λ u 2 γ 2 ( 1 + K 2 2 ) {\displaystyle \lambda _{r}={\frac {\lambda _{u}}{2\gamma ^{2}}}\left(1+{\frac
Free-electron_laser
Spectroscopic technique
, {\displaystyle \Delta {\tilde {\nu }}=\left({\frac {1}{\lambda _{0}}}-{\frac {1}{\lambda _{1}}}\right)\ ,} where Δν̃ is the Raman shift expressed in
Raman_spectroscopy
Structure used in waveguides
crystals Vertical-cavity surface-emitting laser – Type of semiconductor laser diode Photonic crystal sensor Sheppard, C.J.R. (1995). "Approximate calculation
Distributed_Bragg_reflector
Study of sudden qualitative behavior changes caused by small parameter changes
0 ) {\displaystyle (x_{0},\lambda _{0})} if the Jacobian matrix d f x 0 , λ 0 {\displaystyle {\textrm {d}}f_{x_{0},\lambda _{0}}} has an eigenvalue with
Bifurcation_theory
Electrical component
device connected to the line, such as a switching transistor or a varactor diode for instance. An ideal DC voltage source has zero impedance, that is, it
Quarter-wave impedance transformer
Quarter-wave_impedance_transformer
Extremely flat piece of optical-grade glass
doubled Nd:YAG laser emits light at 532 nm (green). Various laser diodes and diode-pumped solid-state lasers emit light in red, yellow, green, blue or
Optical_flat
Measurement technique
spectrum, which is, for example, a good approximation for a light emitting diode (LED). The corresponding intensity modulation is shown to be substantial
White_light_interferometry
2023 awards ceremony for LGBTQ+ literature
The finalists for the 35th Lambda Literary Awards, which honor works of LGBT literature published in 2022, were announced on March 15, 2023. The winners
35th_Lambda_Literary_Awards
Range of spectroscopic analysis
which is continuous from 160 to 2,000 nm; or more recently, light emitting diodes (LED) for the visible wavelengths. The detector is typically a photomultiplier
Ultraviolet–visible spectroscopy
Ultraviolet–visible_spectroscopy
Number of occurrences or cycles per unit time
mixed with the unknown frequency in a nonlinear mixing device such as a diode. This creates a heterodyne or "beat" signal at the difference between the
Frequency
Motor vehicle
(SMICs), and additional radiators). The ten (per side) front light-emitting diode (LED) daytime running lights (DRLs) are located within the main headlamp
Audi_RS_6
American poet
Wong's Rare Birds (Diode Editions, 2017)". The Bind. Retrieved 2024-11-17. McBride, Carrie (June 12, 2023). "Read the 2023 LAMBDA Literary Award Winners"
Shelley_Wong
Photodetector sensitive to infrared radiation
{\displaystyle R(\lambda )} of any quantum photodetector can be calculated exploiting the following formula: R ( λ ) = η λ e h c {\displaystyle R(\lambda )={\frac
Quantum_cascade_detector
interpreter for extended lambda calculus". "... a data structure containing a lambda expression, and an environment to be used when that lambda expression is applied
Glossary_of_computer_science
Optical techniques for the study of biology
Newport/Spectra Physics. The most commonly integrated laser diodes that are used for diode lasers in biophotonics are based either on GaN or GaAs semiconductor
Biophotonics
How efficiently a source produces visible light
_{0}^{\infty }K(\lambda )\Phi _{\mathrm {e} ,\lambda }\,\mathrm {d} \lambda }{\int _{0}^{\infty }\Phi _{\mathrm {e} ,\lambda }\,\mathrm {d} \lambda }},} where
Luminous_efficacy
Optical device with parallel mirrors
making it more similar to a Gires–Tournois interferometer. Semiconductor diode lasers sometimes use a true Fabry–Pérot geometry, due to the difficulty
Fabry–Pérot_interferometer
Form of signal modulation
Pulse-amplitude modulation has also been developed for the control of light-emitting diodes (LEDs), especially for lighting applications. LED drivers based on the PAM
Pulse-amplitude_modulation
Thermally induced flow of charge carriers from a surface
two-element thermionic vacuum tube diode called the Fleming valve (patented 16 November 1904). Thermionic diodes can also be configured to convert a
Thermionic_emission
Electrical conductor used to make contact with nonmetallic parts of a circuit
{\displaystyle \Delta G^{\dagger }={\frac {1}{4\lambda }}(\Delta G^{0}+\lambda )^{2}} In which the λ {\displaystyle \lambda } is the reorganisation energy. Filling
Electrode
Emission of secondary X-rays from a material excited by high-energy X-rays
above. Proportional counters or various types of solid-state detectors (PIN diode, Si(Li), Ge(Li), silicon drift detector SDD) are used. They all share the
X-ray_fluorescence
Quantum physical phenomenon
{\displaystyle d'=d_{I}+\lambda _{1}\tanh \left({\frac {d_{1}}{2\lambda _{1}}}\right)+\lambda _{2}\tanh \left({\frac {d_{2}}{2\lambda _{2}}}\right),} where
Josephson_effect
Technique for amplifying ultrashort laser pulses
(\omega )=2\pi \tau (\omega )c/\lambda (\omega )} is used, where c is the speed of light and λ {\displaystyle \lambda } is the wavelength.) Each component
Chirped_pulse_amplification
Plasma layer with a positive charge
length of the transition region will be the Debye length λ D {\displaystyle \lambda _{\mathrm {D} }} . As the potential increases, more and more electrons are
Debye_sheath
Types of energy range in a solid where no electron states can exist
materials than direct band gap ones. This is why light-emitting and laser diodes are almost always made of direct band gap materials, and not indirect band
Direct_and_indirect_band_gaps
Electrical conductivity with exactly zero resistance
understanding of the phenomenon of superfluidity, because they fall into the lambda transition universality class. The extent to which such generalizations
Superconductivity
Circuit designed to copy a current through one active device
the diode law and Q1 is said to be diode connected. (See also Ebers-Moll model.) It is important to have Q1 in the circuit instead of a simple diode, because
Current_mirror
Instrument for sensing microscopic vibrations of a surface
common type of laser in an LDV is the helium–neon laser, although laser diodes, fiber lasers, and Nd:YAG lasers are also used. The test beam is directed
Laser_Doppler_vibrometer
Chemical element with atomic number 2 (He)
laser pointers, before they were almost universally replaced by cheaper diode lasers. For its inertness and high thermal conductivity, neutron transparency
Helium
Full range of electromagnetic radiation frequencies
and magnetron tubes, and with solid state devices such as Gunn and IMPATT diodes. Although they are emitted and absorbed by short antennas, they are also
Electromagnetic_spectrum
Variation in the effective width of the base in a bipolar junction transistor
{\displaystyle r_{\text{O}}={\frac {1+\lambda V_{\text{DS}}}{\lambda I_{\text{D}}}}={\frac {1}{I_{\text{D}}}}\left({\frac {1}{\lambda }}+V_{\text{DS}}\right)} where
Early_effect
Method to visualize density variations in transparent media
{2\pi \kappa }{\lambda }}\int {p(x,y,z)}\,dz} with κ {\displaystyle \kappa } - the piezooptic coefficient, λ {\displaystyle \lambda } the optical wavelength
Schlieren_imaging
Monochrome light beam whose amplitude envelope is a Gaussian function
= π w 0 2 n λ {\displaystyle z_{\mathrm {R} }={\frac {\pi w_{0}^{2}n}{\lambda }}} is called the Rayleigh range as further discussed below, and n {\displaystyle
Gaussian_beam
Device used for microwave measurements
usually, in keeping with their low-cost application, a low cost Schottky diode detector and VSWR meter rather than an expensive microwave power meter.
Slotted_line
Type of atomic emission spectroscopy
{\displaystyle I(\lambda )} is the line profile such that ∫ − ∞ ∞ I ( λ ) d λ = 1 {\displaystyle \int _{-\infty }^{\infty }I(\lambda )d\lambda =1} λ {\displaystyle
Laser-induced breakdown spectroscopy
Laser-induced_breakdown_spectroscopy
Beam focusing, typically horn-fed planar array of unit cells
used to implement reconfigurable reflectarray unit cells, including PIN diodes, liquid crystal, and novel materials. Each of these methods introduces loss
Reflectarray_antenna
Light-conducting fiber
fiber or with an optoelectronic device such as a light-emitting diode, a laser diode, or a modulator. This can involve either carefully aligning the fiber
Optical_fiber
Class of instruments
2019 when this technique was successfully demonstrated using a versatile diode-laser-based architecture which combined water vapor DIAL, oxygen DIAL and
Atmospheric_lidar
Spectral linewidth of a laser beam
{\begin{aligned}\tau _{\rm {L}}&=\Lambda \tau _{\rm {c}},&(\Delta \nu _{\rm {L}})^{-1}&=\Lambda (\Delta \nu _{\rm {c}})^{-1},&Q_{\rm {L}}&=\Lambda Q_{\rm {c}},&\tau _{\rm
Laser_linewidth
Lamb–Oseen vortex Lamb shift Lamb waves Lambda-CDM model Lambda baryon Lambda point refrigerator Lambda point Lambda transition Lambdavacuum solution Lambert's
Index_of_physics_articles_(L)
American writer
Brooklyn, New York. Books The Willies. Button Poetry, 2020 Chapbooks Adoption. Diode Editions, 2018 Ten For Faheem, 2012 Articles The Power of Touch. The Guardian
Adam_Falkner
) d {\displaystyle \alpha (\lambda )=\left({\frac {I_{0}(\lambda )}{I(\lambda )}}-1\right){\frac {1-R_{\text{eff}}(\lambda )}{d}}} The sensitivity (smallest
Incoherent broad-band cavity-enhanced absorption spectroscopy
Incoherent_broad-band_cavity-enhanced_absorption_spectroscopy
Conceptual opposite of an electron
operation of semiconductor devices such as transistors, diodes (including light-emitting diodes) and integrated circuits. If an electron is excited into
Electron_hole
Observation on the growth of integrated circuit capacity
about the density of components, "a component being a transistor, resistor, diode or capacitor", at minimum cost. Transistors per integrated circuit – The
Moore's_law
Fluid dynamics concept
{\displaystyle \sum {P}={\frac {8\mu }{\pi }}{\frac {lQ^{2}}{r^{4}}}+\pi \lambda lr^{2}{\text{.}}} Minimizing this quantity depends on precisely which variables
Murray's_law
Physical system that responds to a restoring force proportional to displacement
parametric oscillator oscillates when the diode's capacitance is varied periodically. The circuit that varies the diode's capacitance is called the "pump" or
Harmonic_oscillator
Electronic reconfiguration can be achieved by several possible methods. PIN diodes can be used to enable fast phase reconfiguration with an insertion loss
Transmitarray_antenna
Photographic print made using a chromogenic process
conventional silver-based photographic chemicals. The Chromira uses light-emitting diodes (LEDs) instead of lasers. All of the aforementioned printers utilize ICC
Chromogenic_print
Electrically neutral group of two or more atoms
Faccio, R; Pasa, A.A. (2015). "N and p type character of single molecule diodes". Scientific Reports. 5 8350. Bibcode:2015NatSR...5.8350Z. doi:10.1038/srep08350
Molecule
Process that removes material from an object by heating it with a laser
0 , {\displaystyle E={\sqrt {\frac {2\Lambda n_{0}}{\epsilon \epsilon _{0}}}},} where Λ {\displaystyle \Lambda } is the sublimation energy per atom, n
Laser_ablation
Scientific instruments
manipulation, and sorting of cells and colloids in microfluidic systems with diode laser bars". Optics Express. 12 (19): 4390–8. Bibcode:2004OExpr..12.4390A
Optical_tweezers
Description of large objects' physics
mechanics on an engineering scale are conduction by quantum tunneling in tunnel diodes and very narrow transistor gates in integrated circuits. Classical mechanics
Classical_mechanics
Cascade of electronic components
Detector diodes for RF and Microwaves may be point contact diodes, Schottky diodes, Gallium Arsenide or p-n junction devices. Of these, Schottky diodes and
RF_chain
Measure of laser beam quality
2 ( z − z 0 ) 2 , {\displaystyle W^{2}(z)=W_{0}^{2}+M^{4}\left({\frac {\lambda }{\pi W_{0}}}\right)^{2}(z-z_{0})^{2},} where W ( z ) {\displaystyle W(z)}
M_squared
Basic statistical model
result in the conservation of the number of photons (e.g. light-emitting diodes, "white" cavities). In these cases, the photon distribution function will
Gas_in_a_box
Microscopy technique
active light sources such as a fluorescent dye or even a light emitting diode that enables fluorescence excitation. The merits of aperture and apertureless
Near-field scanning optical microscope
Near-field_scanning_optical_microscope
Zener (professor, 1968–1993), theoretical physicist, namesake of the Zener diode, Zener voltage, and Zener pinning The following persons have served as president
List of Carnegie Mellon University people
List_of_Carnegie_Mellon_University_people
First spacecraft to visit Saturn (1973–1995)
light-years) of the K-type star TYC 992-192-1. It is also expected to pass near Lambda Aquilae in about four million years. Pioneer 11 has been overtaken by the
Pioneer_11
Control, communication, and entertainment systems in cars and other motor vehicles
greatly expanded the use of electronics in automobiles, with solid-state diodes making the automotive alternator the standard after about 1960, and the
Automotive_electronics
Radio technology devices
RF voltage for a given main line power making the work of the detector diode easier. The frequency range specified by manufacturers is that of the coupled
Power dividers and directional couplers
Power_dividers_and_directional_couplers
Device used to measure the wavelength of radio waves
approximately the speed of light c: f = c λ {\displaystyle f={\frac {c}{\lambda }}\,} The nodes are much sharper than the antinodes, because the change
Lecher_line
Russian physicist
ISBN 978-5-94621-556-5. The Mechanism of Superfast Switching of Avalanche S-Diodes Based on GaAs Doped With Cr and Fe / Prudaev I., Oleinik V., Smirnova T
Oleg_Tolbanov
Instructions a computer can execute
process of photolithography then integrates unipolar transistors, capacitors, diodes, and resistors onto the wafer to build a matrix of metal–oxide–semiconductor
Computer_program
Alloy
x^{2}+0.832\cdot x^{3}} Using the relationship λ p = 1.24 E g {\displaystyle \lambda _{\text{p}}={\frac {1.24}{E_{\text{g}}}}} , where λ is in μm and Eg. is
Mercury_cadmium_telluride
Emission of electrons induced by an electrostatic field
(independent of voltage) under the following conditions: (1) the apparatus is a "diode" arrangement, where the only electrodes present are the emitter and a set
Field_electron_emission
Quantum optics in silicon
of Soref and Bennett. Modulators can consist of both forward-biased PIN diodes, which generally generate large phase-shifts but suffer of lower speeds
Silicon_photonics
Hollow metal pipe used to carry radio waves
λ = 2 W {\displaystyle \lambda \;=\;2W} and the lowest frequency is thus f = c / λ = c / 2 W {\displaystyle f\;=\;c/\lambda \;=\;c/2W} With circular
Waveguide_(radio_frequency)
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LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
LAMBDA DIODE
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