Nyob rau hauv thaj teb Optoelectronics, photodes thiab Laser Diodes yog ob hom khoom siv tseem ceeb, uas ua si tus cwj pwm tseem ceeb ntawm kev kuaj teeb liab kho qhov muag thiab qhib feem ntau.
Photodiodes hloov lub teeb lub teeb rau hauv cov hluav taws xob cov nyhuv hluav taws xob los ntawm cov ntaub ntawv hluav taws xob los ntawm kev pom zoo, kev nrhiav kev sib txuas lus thiab kev kuaj mob; Thaum laser diodes ua cov dej khov kho los ntawm kev txhawb nqa cov teeb meem, ua cov kev sib txuas lus tseem ceeb, kev lag luam lag luam thiab cov khoom siv hluav taws xob. Txawm hais tias ob qho tib si yog semiconduction Optoelectronic khoom siv, muaj cov ntsiab cai sib hloov pauv ntawm lawv cov haujlwm (kev cai siv hluav taws xob VS kev kub siab Kab lus no yuav qhia cov yam ntxwv ntawm cov yam ntxwv thiab muaj thaj tsam ntawm ob los ntawm kev txheeb xyuas cov txiaj ntsig, thiab muab cov ntawv txheeb xyuas rau kev xaiv ntaus ntawv.
Kev txhais tau yooj yim thiab ua haujlwm ntawm cov ntsiab cai
1. Photodiode
Cov ntsiab lus txhais:Lub cuab yeej ua haujlwm semiconductor uas hloov lub teeb pom kev rau hluav taws xob. Nws qhov tseem ceeb yog PN hlws ris taw, thiab lub plhaub muaj lub qhov rais qhib tau kom tau txais lub teeb. Cov cim sau ntawv hauv Daim Duab Circuit Court feem ntau VD.
Ua haujlwm ua haujlwm:Raws li cov nyhuv photoelectric, thaum photons Irradiate lub PN Kev sib tshuam ntawm lub photodiode, yog tias lub photon zog txaus, nws yuav ua rau lub tshuab hluav taws xob loj txaus, nws yuav ua khub nyob hauv lub semiconductor. Nyob rau hauv qhov kev txiav txim ntawm kev thim rov qab voltage, cov photogenerated cable, thiab cov photocrent hloov pauv mus rau hauv lub teeb liab teeb liab mus rau hauv lub cim hluav taws xob. Thaum tsis muaj qhov kaj, qhov thim rov qab yog qhov tseem ceeb heev, uas yog hu ua kev tsaus ntuj tam sim no; Thaum muaj lub teeb, thim rov qab tam sim no nce sai heev los ua cov ntawv sau.
2. Laser Diode
Cov ntsiab lus txhais:Lub cuab yeej siv hluav taws xob uas tsim cov lasers los ntawm kev tso tawm cov khoom plig. Nws yog qhov tseem ceeb semiconductor diode, uas muaj cov txheej txheem p-semiconductors thiab n-hom txheej txheem uas lub teeb ua haujlwm, thiab daim iav coated uas qhia txog lub teeb.
Ua haujlwm ua haujlwm:Thaum cov khoom siv tam sim no, hluav taws xob tau txhaj los ntawm N thaj av mus rau hauv lub cheeb tsam PA, thiab cov qhov hluav taws xob siab thiab lub zog qis hauv thaj av (cov pa hluav taws xob (particle). PHOTONS generated los ntawm kev ua rau hluav taws xob tau tshwm sim hauv cov txheej txheem ib txwm muaj, txhawb nqa cov duab hluav taws xob rov qab, txhawb nqa cov khoom siv hluav taws xob ib yam thiab theem, tsim lub teeb hluav taws xob. Thaum lub qhov muag tau tshaj qhov poob qis tshaj qhov poob ntawm qhov kev ua haujlwm ntawm ib qho kev ua kom raug tshem tawm cov kab ke laser kom raug tshem tawm los ntawm bandgap dav ntawm cov khoom siv semiconductor.
Cov Tub Ntxhais Sib Piv
| Kev sib piv qhov ntev | Photodiode | Laser Diode |
| Rooj mov | Lub teeb teeb liab → Hluav Taws Xob Hluav Taws Xob (txais) | Hluav Taws Xob Cov Hluav Taws Xob ← Laser (Transmitter) |
| Cov yam ntxwv sau tawm | Incoherent Lub Teeb Nrhiav, Cov Lus Teb Ceev | Coherent, monochromatic, mas tiag tiag lier laser laser |
| Qauv Sib Nrig | PN sib tshuam lossis tus lej PIN, tsis muaj qhov rov ua noj kab noj hniav | Muaj r resonant kab noj hniav (FP \/ DFB qauv) |
| Ua Haujlwm Hom | Kev paub dhau los nrhiav kom tau, tsis muaj qhov pib qhov tam sim no | Kev npaj siab, yuav tsum muaj kev tshaj tawm tam sim no |
| Kev ua haujlwm tau zoo thiab siv fais fab | Tsawg zog siv hluav taws xob, tsis muaj qhov yuav tsum tau ua | Kev siv hluav taws xob siab, yuav tsum tau tsav tam sim no |
Qhov sib txawv hauv kev thov cov xwm txheej
1. Daim ntawv thov cov xwm txheej ntawm photodiodes
Kev sib txuas lus kho qhov muag tau txais thaum kawg
Scenario: Kev sib txuas lus kho qhov muag tau sib txuas lus, cov ntaub ntawv ceev cov ntaub ntawv xa tawm system.
Muaj nuj nqi: Hloov cov teeb liab kho qhov muag rau hauv lub cim hluav taws xob rau cov ntaub ntawv cim.
Nta: High rhiab, cov lus teb ceev (nanosecond theem), haum rau kev sib txuas lus ntev.
② Lub Teeb Siv Tau Kom Tau
Scenario: Higient lub teeb pom kev zoo ntsuas, cov khoom siv kho mob (xws li oximeter), kev kuaj xyuas infrared infrared.
Muaj nuj nqi: nrhiav kev siv teeb lub teeb hloov pauv thiab hloov lawv mus rau hauv cov hluav taws xob teeb tsa kom ua tiav kev tswj hwm lossis saib xyuas.
Nta: dav qhia teb, npog pom lub teeb, infrared thiab lwm pawg.
Cov Khoom Siv Ruaj Ntseg Kev Ruaj Ntseg
Scenario: Kev soj ntsuam infrared, pa taws cov digtors, tsis siv neeg lub qhov rooj sib dhos.
Muaj nuj nqi: ua rau muaj lub tswb lossis tswj cov lus qhia los ntawm kev cuam tshuam txog kev tawm tsam lossis hloov pauv.
Nta: Kev ntseeg siab, tsis tshua muaj hluav taws xob, haum rau kev xyuas mus sij hawm ntev.
2. Daim ntawv thov cov xwm txheej ntawm Laser Diodes
Laser Luam Ntawv Thiab Barcode Luam Ntawv
Cov xwm txheej: tshuab luam ntawv, barcode scanners.
Muaj nuj nqi: Emit high-ci ntsa iab, tsom cov kab teeb laser rau cov qauv ntsuas lossis luam ntawv.
Nta: muaj zog kev paub, zoo monochromaticity, haum rau high-precision muab txoj haujlwm.
② Kev Sib Tham Txog Qhov Muag Tshiab
Scenario: Kev xa Fiber Fiber ntau dua, kev sib txuas lus nrawm hauv cov ntaub ntawv.
Muaj nuj nqi: hloov cov hluav taws xob kos npe rau cov cim kho qhov muag thiab kis cov ntaub ntawv los ntawm cov ntaub ntawv kho kho.
Nta: High bandwidth, qis poob, txhawb rau ultra-ntev nrug (xws li Transocanic kev sib txuas lus).
③ Kev lag luam khoom thiab kev kho mob
Scenario: Laser txiav, Vuam, Laser phais (xws li ophthalmology, dermatology).
Muaj nuj nqi: Siv lub zog siab ntom ntom ntom ntom ntom rau cov khoom ua lossis cov ntaub so ntswg tshem tawm.
Nta: Kho tau lub zog, tswj cov nqaj, lub siab xav thiab tsis muaj kev sib cuag.
Kev sib piv ntawm cov kev ua tsis tau zoo
1.Txoj Kev Ceev Ceev
| Tsis | Photodiode | Laser Diode |
| Lub Sijhawm Teb Teb | Cauj (Nanosecond qib, feem ntau<1 ns) | Qeeb qeeb (txwv los ntawm kev sib cais bandwidth, feem ntau pua ntawm picoseconds rau nanoseconds) |
| Zais Cov Lus Qhia | Kev vam khom ntawm photon nqus thiab Carrier hloov sijhawm, cov qauv yooj yim | Kev tswj hwm kev coj tus nqi yog txwv los ntawm cov khoom uas muaj cov nyhuv zoo thiab electro-optical ncua |
| Daim Ntawv Thov Kev Pab Cuam | Kev sib txuas lus nrawm kho qhov muag tau txais tos, kev saib xyuas tiag tiag ntawm lub teeb siv | Kev sib txuas lus kho qhov muag tau hloov (sab nraud kev hloov kho), laser zaub |
2. Vws tau ruaj khov
| Tsis | Photodiode | Laser Diodes |
| Yoj yoj muaj ntau | Dav (UV rau IR, cov khoom siv nyob ntawm) | Nqaim (monochromatic, wavelength txiav txim los ntawm cov khoom siv thiab cov qauv) |
| Ruaj khov | General (Kub Thiab Cov Qauv Nyob) | High (spectral purity >90%, ruaj khov raws li qhov ntsuas kub) |
| Daim Ntawv Thov Kev Pab Cuam | Multi-Spectral nrhiav tau, kev pom lub teeb pom kev zoo | Precision ntsuas (xws li kev sib txuas lus kho qhov muag, cov khau kho mob), kev pom zoo |
3. Tus nqi thiab kev nyuaj
| Tsis | Photodes | Laser Diodes |
| Raug Cai Raug Cai | Tsawg (cov qauv yooj yim, tsis muaj tus rov muaj kab mob uas yuav tsum tau) | Siab (xav tau kev tswj hwm ntawm doping, realonant kab noj hniav thiab ntim khoom) |
| Tsav tsheb nyuaj | Tsawg (tsis muaj qhov pib tam sim no yuav tsum tau, tuaj yeem yog kev tsis ncaj qha) | High (xav tau tas li kev tsav tsheb tam sim no, ntsuas kub, kho qhov muag rov ntsuas dua) |
| Daim Ntawv Thov Kev Pab Cuam | Tus nqi qis them photoelectric, cov khoom siv hluav taws xob | Cov cuab yeej ua haujlwm siab (xws li Lidar, muaj kev sib txuas lus zoo ntawm qhov muag) |
4. Kev sib piv ntawm lwm qhov tseem ceeb
| Tsis | Photodes | Laser Diode |
| Kev hnov tau | Nruab nrab (cov khoom siv thiab thaj chaw nyob ntawm) | Siab (concentrated nqaj, muaj zog hluav taws xob) |
| Tso Tawm Lub Zog | Tsawg (milliwatt qib, lub teeb kuaj pom tsuas yog) | Siab (milliwatt rau watt, modulatable) |
| Kev | Pluag (hemispherical radiance) | Tsis tshua muaj zog (divergence kaum ntse ntse<10°, resonant cavity dependent) |
| Lub neej | Ntev (tsis muaj teeb meem kev laus plaub hau) | Luv luv (yooj yim rau attenuate ntawm lub zog siab, yuav tsum muaj cua sov kev tswj hwm) |
Xaiv raws li koj cov kev xav tau: photodiendes (siab rhiab siab, tus nqi qis) yog qhov zoo tshaj plaws rau kev ntes kho qhov muag thiab kev xav tau); Laser Diodes (siab thiab lub zog loj) tau nyiam dua rau cov kev sib txuas lus (xws li kev sib txuas lus thiab kev ua haujlwm). Cov txheej txheem ib puag ncig yuav tsum tau txiav txim siab: photodies yog qhov haum rau kev siv hluav taws xob dav thiab muaj zog siv hluav taws xob yuav tsum tau tswj qhov kub thiab muaj hluav taws xob ntau dua.
Cov ntaub ntawv tiv toj:
Yog tias koj muaj tswv yim, xav tham nrog peb. Tsis hais qhov twg peb cov neeg yuav khoom yog thiab peb yuav tsum ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom kom muaj txiaj ntsig zoo, tus nqi zoo tshaj plaws, thiab kev pabcuam zoo tshaj plaws.
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