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to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 see also 2 references toggle the table of contents quantum dot laser 6 languages català deutsch español فارسی 日本語 русский edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia semiconductor laser that uses quantum dots as the active laser medium a quantum dot laser is a semiconductor laser that uses quantum dots as the active medium for stimulated emission of light due to quantum confinement of charge carriers in all three spatial directions their energy spectrum in quantum dots is discrete and resembles that in atoms injection lasers based on semiconductor quantum dot heterostructures promise device characteristics superior to traditional semiconductor lasers based on quantum wells and even more so bulk active medium 1 2 improvements in lasing threshold relative intensity noise linewidth enhancement factor and temperature insensitivity have already been demonstrated in quantum dot lasers the quantum dot active region may also be engineered to operate at different wavelengths by varying dot sizes and composition this allows to fabricate quantum dot lasers operating at wavelengths beyond those achievable in quantum well lasers 3 in injection lasers based on self assembled quantum dots obtained by stranski krastanov growth mode 4 5 6 7 inhomogeneous line broadening is inherently present that is caused by quantum dot size dispersion inhomogeneous line broadening adversely affects the quantum dot laser characteristics in particular it makes the threshold current higher and more temperature sensitive 8 hence a strict control of uniformity of quantum dots is required in self organized laser structures devices based on quantum dot active media have found commercial application in medicine laser scalpel optical coherence tomography display technologies projection laser tv spectroscopy and telecommunications a 10 gbit s quantum dot laser that is insensitive to temperature fluctuation for use in optical data communications and optical networks has been developed using this technology the laser is capable of high speed operation at 1 3 μm wavelengths at temperatures from 20 c to 70 c it works in optical data transmission systems optical lans and metro access systems in comparison to the performance of conventional strained quantum well lasers of the past the new quantum dot laser achieves significantly higher stability of temperature newer so called comb lasers capable of emitting multiple discrete wavelengths of light based on quantum dot lasers have been found to be capable of operating at wavelengths of 80 nm and be unaffected by temperatures between 20 c and 90 c and allow higher accuracy with reduced fluctuations and less relative intensity noise 9 10 lasers exploiting optically pumped nanocrystal quantum dots as their active medium exhibit device performance that is closer to solid state lasers than to injection lasers one challenge in lasers based on nanocrystal quantum dots is the presence of multicarrier auger processes which increases the nonradiative transitions rates 11 in contrast to bulk semiconductors the auger processes rates can be controlled to some degree in nanocrystal quantum dots in development are colloidal quantum dot lasers which would use quantum confinement to change the optical properties of the semiconductor crystals 10 nm in diameter through solution based rearrangements of quantum dots 12 13 self assembly of colloidal quantum dots into microsized supraparticle aggregates has demonstrated lasing through the whispering gallery modes that arise at the spherical boundary these quantum dot lasers have proven to be recyclable with high performance at thresholds as low as 100 μj cm 2 14 see also edit list of laser articles references edit alferov zhores i july 2001 nobel lecture the double heterostructure concept and its applications in physics electronics and technology reviews of modern physics 73 3 767 782 doi 10 1103 revmodphys 73 767 kroemer herbert july 2001 nobel lecture quasielectric fields and band offsets teaching electrons new tricks reviews of modern physics 73 3 783 793 doi 10 1103 revmodphys 73 783 fujitsu university of tokyo develop world s first 10gbps quantum dot laser featuring breakthrough temperature independent output fujitsu global bimberg d kirstaedter n ledentsov n n alferov zh i kop ev p s ustinov v m april 1997 ingaas gaas quantum dot lasers ieee journal of selected topics in quantum electronics 3 2 196 205 doi 10 1109 2944 605656 lester l f stintz a li h newell t c pease e a fuchs b a malloy k j august 1999 optical characteristics of 1 24 μm inas quantum dot laser diodes ieee photonics technology letters 11 8 931 933 doi 10 1109 68 775303 kim k norris t b ghosh s singh j bhattacharya p march 2003 level degeneracy and temperature dependent carrier distributions in self organized quantum dots applied physics letters 82 12 1959 1961 doi 10 1063 1 1563732 hdl 2027 42 71141 nishi kenichi takemasa keizo sugawara mitsuru arakawa yasuhiko november 2017 development of quantum dot lasers for data com and silicon photonics applications ieee journal of selected topics in quantum electronics 23 6 1901007 doi 10 1109 jstqe 2017 2699787 asryan levon v suris robert a april 1996 inhomogeneous line broadening and the threshold current density of a semiconductor quantum dot laser semiconductor science and technology 11 4 554 567 doi 10 1088 0268 1242 11 4 017 quantum dot laser technology archived from the original on 2023 03 02 retrieved 2022 03 09 comb laser optical frequency combs melnychuk christopher guyot sionnest philippe 2021 02 24 multicarrier dynamics in quantum dots chemical reviews 121 4 2325 2372 doi 10 1021 acs chemrev 0c00931 issn 0009 2665 park young shin roh jeongkyun diroll benjamin t schaller richard d klimov victor i may 2021 colloidal quantum dot lasers nature reviews materials 6 5 382 401 bibcode 2021natrm 6 382p doi 10 1038 s41578 020 00274 9 osti 1864315 s2cid 231931231 kagan cherie r bassett lee c murray christopher b thompson sarah m 10 march 2021 colloidal quantum dots as platforms for quantum information science chemical reviews 121 5 3186 3233 doi 10 1021 acs chemrev 0c00831 pmid 33372773 s2cid 229715753 downie d h eling c j charlton b k alves p u edwards p r laurand n 2024 recycling self assembled colloidal quantum dot supraparticle lasers optical materials express 14 12 2982 2994 doi 10 1364 ome 537183 v t e electronic components semiconductor devices mos transistors transistor nmos pmos bicmos biofet chemical field effect transistor chemfet complementary mos cmos depletion load nmos fin field effect transistor finfet floating gate mosfet fgmos insulated gate bipolar transistor igbt isfet ldmos mos field effect transistor mosfet multi gate field effect transistor mugfet power mosfet thin film transistor tft vmos umos qfet tunnel field effect transistor tfet high electron mobility transistor hemt rf cmos native transistor other transistors bipolar junction transistor bjt darlington transistor diffused junction transistor field effect transistor fet junction gate fet jfet organic fet ofet light emitting transistor let pentode transistor point contact transistor programmable unijunction transistor put static induction transistor sit tetrode transistor nanoscale vacuum channel transistor nvct single electron transistor set heterojunction bipolar transistor hbt mesfet heterostructure emitter bipolar transistor hebt itfet avalanche transistor junctionless nanowire transistor jlnt schottky transistor spin transistor ballistic collection transistor ballistic deflection transistor bdt drift field transistor organic electrochemical transistor oect spacistor surface barrier transistor synaptic transistor oxide thin film transistor nomfet grown junction transistor eosfet alloy junction transistor fe fet dna field effect transistor dnafet diodes avalanche diode shockley diode selenium rectifier fast diode single photon avalanche diode spad constant current diode cld crd gunn diode varicap impatt diode metal insulator metal diode mim diode transient voltage suppression diode tvs diode laser diode ld light emitting diode led organic light emitting diode oled photodiode pin diode p n diode tunnel diode avalanche photodiode apd solar cell multi junction solar cell mj hybrid solar cell schottky junction solar cell plasmonic solar cell heterojunction solar cell hjt schottky diode step recovery diode srd zener diode resonant tunneling diode rtd photoreflector backward diode geometric diode lr diode chua s diode baritt diode stabistor phosphorescent organic light emitting diode pholed thin film diode superluminescent diode sld josephson diode hole accumulation diode had silicon photomultiplier sipm metal rectifier bifacial solar cells bsc integrated circuits hybrid integrated circuit hic mixed signal integrated circuit mos integrated circuit mos ic three dimensional integrated circuit 3d ic photonic integrated circuit pic application specific integrated circuit asic field programmable gate array fpga system on a chip soc other devices diac heterostructure barrier varactor light emitting capacitor lec memistor memristor memtransistor memory cell metal oxide varistor mov organic semiconductor photodetector silicon controlled rectifier scr silicon controlled switch scs solaristor static induction thyristor sith thyristor trancitor triac varicap vertical cavity surface emitting laser vcsel gate turn off thyristor gto integrated gate commutated thyristor igct unijunction transistor ujt quantum cascade laser qcl photoresistor quantum dot display quantum dot solar cell photoelectrochemical cell dye sensitized solar cell plasmonic solar cell quantum dot laser quadrac interband cascade laser icl oscillistor mos composite static induction thyristor csmt mos controlled thyristor mct resistive opto isolator ro emitter turn off thyristor eto trisil quantum well infrared photodetector qwip quantum cascade detector qcd resonant cavity enhanced photo detector rce golay cell hybrid pixel detector semiconductor detector voltage regulators linear regulator low dropout regulator switching regulator buck boost buck boost split pi ćuk sepic charge pump switched capacitor vacuum tubes standard acorn tube audion beam tetrode barretter compactron diode fleming valve neutron tube nonode nuvistor pentagrid hexode heptode octode pentode photomultiplier pmt phototube tetrode triode x ray tube double diode triode additron tube computron tube micropup rf backward wave oscillator bwo cavity magnetron crossed field amplifier cfa gyrotron inductive output tube iot klystron maser sutton tube traveling wave tube twt vircator cathode ray tubes beam deflection tube charactron iconoscope magic eye tube monoscope selectron tube storage tube trochotron video camera tube williams tube gas filled tubes crossatron dekatron ignitron krytron mercury arc valve nixie tube thyratron trigatron voltage regulator tube geiger müller tube wire chamber neon lamp adjustable potentiometer digital variable capacitor varicap passive connector audio and video electrical power rf ferrite antifuse fuse resettable efuse resistor switch thermistor varistor reactive capacitor types ceramic resonator crystal oscillator inductor relay reed relay mercury relay other devices hall effect sensor squid spin valve magnetic tunnel junction mtj planar hall sensor ggnmos v t e semiconductor lasers basic types laser diode ld double heterostructure laser dh separate confinement heterostructure laser sch distributed bragg reflector laser dbr distributed feedback laser dfb quantum well laser quantum dot laser quantum cascade laser qcl external cavity laser ecl hybrid types volume bragg grating laser other types vertical cavity surface emitting laser vcsel vertical external cavity surface emitting laser vecsel hybrid silicon laser interband cascade laser icl semiconductor ring laser polariton laser theory semiconductor laser theory laser diode rate equations materials indium arsenide inas gallium arsenide gaas list of semiconductor materials v t e display technology video displays past generation eidophor cathode ray tube crt jumbotron electroluminescent display eld rear projection display plasma display panel pdp alis current generation quantum dot display qled electronic paper e ink gyricon light emitting diode display led organic light emitting diode oled active matrix organic light emitting diode amoled liquid crystal display lcd tft tn ips led backlit blue phase digital light processing dlp liquid crystal on silicon lcos next generation microled electroluminescent quantum dots elqd qd led organic light emitting transistor olet surface conduction electron emitter display sed field emission display fed laser tv quantum dot liquid crystal mems display imod tmos ferroelectric liquid crystal display flcd thick film dielectric electroluminescent technology tdel non video electromechanical flip dot split flap eggcrate fiber optic nixie tube vacuum fluorescent display vfd light emitting electrochemical cell lec lightguide display dot matrix display seven segment display eight segment display nine segment display fourteen segment display sixteen segment display 3d display stereoscopic autostereoscopic multiscopic hologram holographic display computer generated holography volumetric fog display static media monoscope movie projector neon sign slide projector transparency laser beam display capabilities edid cea 861 displayid always on display see through display related articles scan line history of display technology large screen television technology optimum hdtv viewing distance high dynamic range hdr color light output flexible display comparison of crt lcd plasma and oled displays comparison of display technology retrieved from https en wikipedia org w index php title quantum_dot_laser oldid 1350712284 categories semiconductor lasers quantum dots hidden categories articles with short description short description is different from wikidata this page was last edited on 23 april 2026 at 14 48 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct 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