Dab tsi yog Cov Qauv thiab Kev Siv Laser Diodes?

Laser Diodeyog lub teeb ci semiconductor laser, tseem hu ua laser diode, tsim nyob rau xyoo 1960. LASER yog ib lo lus luv luv rau "Lub teeb Amplification los ntawm Stimulated Emission of Radiation", feem ntau hu ua LD. Vim tias nws tuaj yeem tsim lub teeb nrog tib lub wavelength thiab theem khoom, kev sib raug zoo yog nws qhov loj tshaj plaws. Cia peb kawm paub.

1. Lub cev qauv

Ib txheej ntawm photoactive semiconductor yog muab tso rau nruab nrab ntawm lub junctions ntawm lub teeb-emitting diode, thiab nws kawg lub ntsej muag muaj ib feem ntawm kev xav tom qab polishing, yog li tsim ib tug optical resonator. Nyob rau hauv cov ntaub ntawv ntawm kev tsis ncaj ncees rau pem hauv ntej, lub cim LED emits lub teeb thiab cuam tshuam nrog lub optical resonator, yog li ntxiv stimulating lub emission ntawm ib tug wavelength lub teeb los ntawm kev sib tshuam, lub cev muaj zog uas yog nyob ntawm cov khoom.

Nyob rau hauv lub tshuab VCD, lub semiconductor laser diode yog ib tug ntawm cov tseem ceeb Cheebtsam ntawm lub laser lub taub hau, uas yog feem ntau yog tsim los ntawm ib tug ob chav heterostructure gallium-arsenic (AsALGA) ternary compound, yog ib tug ze-infrared semiconductor ntaus ntawv nrog ib tug wavelength ntawm 780. ~ 820 nm thiab ntsuas lub zog ntawm 3 ~ 5 MW. Tsis tas li ntawd, muaj lub teeb pom kev zoo (xws li liab) semiconductor laser diode, uas kuj tau siv dav hauv VCD cov cav tov thiab cov ntawv nyeem barcode.

Cov duab thiab qhov loj ntawm lub laser diode tau pom nyob rau hauv daim duab 1. Muaj peb hom kev tsim sab hauv.

Raws li tuaj yeem pom los ntawm daim duab 2, lub laser diode suav nrog ob ntu: thawj ntu yog lub laser emission part (uas tuaj yeem sawv cev los ntawm LD), nws lub luag haujlwm yog emit laser, raws li qhia hauv daim duab 2 electrode (2); Qhov thib ob yog qhov chaw txais laser (tuaj yeem sawv cev los ntawm PD), nws lub luag haujlwm yog lees txais thiab saib xyuas lub laser emission los ntawm LD (tau kawg, yog tias qhov tso tawm ntawm LD tsis raug saib xyuas, PD feem tuaj yeem siv tau) , raws li qhia hauv daim duab 2 electrode (3); Ob qhov no sib koom ib qho electrode (1), yog li lub laser diode muaj peb electrodes.

Lub laser diode muaj qhov zoo ntawm qhov me me, lub teeb yuag, kev siv hluav taws xob tsawg, kev tsav tsheb yooj yim, kev hloov kho yooj yim, kev ua haujlwm tsis zoo, thiab kev vibration tsis kam, tab sis nws yog qhov tsis tshua muaj siab rau overcurrent, overvoltage, thiab electrostatic cuam tshuam, yog li ntawd, hauv kev siv, them nyiaj tshwj xeeb kom tsis txhob ua rau nws cov kev ua haujlwm tsis dhau nws qhov siab tshaj plaws uas tau tso cai, txoj kev siv tau raws li hauv qab no:

(1) Lub laser diode yog tsav los ntawm DC qhov chaw tam sim no.

(2) Series tam sim no-limiting resistors thiab parallel bypass capacitors ntawm lub laser-electrode Circuit Court.

(3) Vim tias qhov kub ntawm lub laser diode yuav ua rau kom tus nqi tam sim no ntws los ntawm nws, qhov tsim nyog ntsuas kub dissipation yuav tsum tau siv los xyuas kom meej tias cov cuab yeej ua haujlwm nyob rau hauv ib qho kev ntsuas kub.

(4) Txhawm rau kom tsis txhob muaj kev puas tsuaj los ntawm lub laser diode vim qhov hluav taws xob rov qab ntau dhau, lub silicon diode tuaj yeem ceev ceev hauv qhov rov qab sib npaug ntawm ob qho kawg.

2. Txoj kev kuaj xyuas

(1) Txoj kev ntsuas kev tiv thaiv: Tshem tawm lub laser diode thiab ntsuas nws qhov txiaj ntsig zoo thiab thim rov qab nrog multimeter R × 1k lossis R × 10k. Nquag, tus nqi tiv thaiv rau pem hauv ntej yog nyob nruab nrab ntawm 20 thiab 40 kω, thiab tus nqi rov qab yog infinity. Yog tias qhov ntsuas qhov zoo ntawm qhov ntsuas siab tshaj 50kΩ, nws qhia tau tias qhov kev ua haujlwm ntawm lub laser diode tau poob qis. Yog hais tias qhov ntsuas rau pem hauv ntej kuj muaj nuj nqis ntau dua 90 kω, nws qhia tau hais tias lub diode tau muaj hnub nyoog hnyav thiab siv tsis tau lawm.

(2) Txoj kev ntsuas tam sim no: Siv lub tshuab ntsuas ntsuas ntsuas ntsuas qhov ntsuas qhov ntsuas hluav taws xob ntawm ob qho kawg ntawm cov khoom thauj khoom hauv lub laser diode tsav Circuit Court, thiab tom qab ntawd kwv yees tus nqi tam sim no ntws los ntawm lub raj raws li Ohm txoj cai, thaum tam sim no tshaj 100mA, Yog tias lub zog laser potentiometer hloov kho, thiab tam sim no tsis hloov pauv loj, lub laser diode tuaj yeem raug txiav txim siab kom muaj kev laus hnyav. Yog tias tam sim no surges tawm ntawm kev tswj, nws txhais tau hais tias qhov kho qhov muag kab noj hniav ntawm lub laser diode tau puas lawm.

3. Cov teeb meem xav tau kev saib xyuas

⑴ Lub laser tawm los ntawm lub laser diode tuaj yeem ua rau tib neeg lub qhov muag puas. Thaum lub diode ua haujlwm, nws yog nruj me ntsis txwv tsis pub ncaj qha saib nws lub ntsej muag kawg, tsis txhob saib ncaj qha ntawm lub laser los ntawm lub lens, thiab tsis txhob saib lub laser los ntawm daim iav.

⑵ Cov cuab yeej xav tau lub zog tsav tsim nyog, qhov tam sim no rov qab tam sim no yuav tsum tsis pub tshaj 2uA, thiab qhov rov qab voltage yuav tsum tsis pub tshaj 3V, txwv tsis pub, nws yuav ua rau lub cuab yeej puas. Kev ntsuas los tiv thaiv tam sim no inrush thaum lub hwj huam mov yog qhib thiab tawm. Thaum kuaj cov tsav tsheb nrog lub oscilloscope, txiav tawm lub hwj huam mov thiab txuas lub oscilloscope sojntsuam. Yog tias qhov kev sojntsuam raug kuaj nrog lub hwj chim qhib, lub cuab yeej yuav raug puas tsuaj los ntawm qhov hluav taws xob inrush.

⑶ Cov cuab yeej yuav tsum tau muab khaws cia lossis ua haujlwm hauv qhov chaw huv.

⑷ Ua haujlwm ntawm qhov kub siab dua yuav ua rau qhov pib tam sim no, txo qis zaus hloov dua siab tshiab, thiab ua kom lub cev laus zuj zus tuaj. Thaum kho qhov kev tawm tswv yim kho qhov muag, lub ntsuas hluav taws xob kho qhov muag yuav tsum raug kuaj kom tsis txhob muaj ntau tshaj qhov tso zis ntau.

⑸Yog tias lub zog tso zis ntau dua li qhov ntsuas qhov ntsuas, nws yuav ua rau kev laus ntawm cov khoom siv.

⑹ Lub tshuab yuav tsum tau ua kom sov los yog siv nyob rau hauv lub tub yees, thiab qhov kub ntawm lub laser diode yog nruj me ntsis tswj hauv qab 20 degrees kom ntseeg tau lub neej.

⑺ Lub diode yog ib qho khoom siv hluav taws xob electrostatic, uas tuaj yeem nqa tau tsuas yog thaum tib neeg lub cev zoo. Anti-static tuaj yeem siv los ntawm kev tiv thaiv static bracelets.

⑻ Cov zis wavelength ntawm lub laser yog cuam tshuam los ntawm kev ua hauj lwm tam sim no thiab cua sov dissipation, yog li nws yog ib qho tsim nyog yuav tsum tswj kom zoo cua sov dissipation tej yam kev mob thiab txo qhov kub ntawm lub raj tub ntxhais thaum ua hauj lwm. Lub dab dej kub yog ntxiv los tiv thaiv lub laser diode los ntawm kev nce siab dhau thaum ua haujlwm.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.