I-VCSEL, ebizwa ngokuthi i-Vertical Cavity Surface Emitting Laser ngokugcwele, iwuhlobo lwe-semiconductor laser. Okwamanje, ama-VCSEL amaningi asekelwe kuma-semiconductors e-GaAs, futhi ubude be-wavelength bokukhishwa ikakhulukazi bukwibhendi ye-infrared wave.
Ngo-1977, uProfesa u-Ika Kenichi wase-Tokyo University of Technology waqala ukuphakamisa umqondo welaser ephuma endaweni eqondile yomgodi. Ezinsukwini zakuqala, wayefuna ngokuyinhloko ukuthola i-laser ye-semiconductor yemodi yobude eyodwa enomphumela ozinzile ngokunciphisa ubude bomgodi. Kodwa-ke, ngenxa yobude bendlela eyodwa obufushane balo mklamo, kube yinselele ukuthola i-laser lasing, ngakho ucwaningo lwangaphambili lwe-VCSEL lwandiswa. Eminyakeni emibili kamuva, uProfesa Yihe Jianyi waqaphela ngempumelelo ukukhishwa kwe-pulsed kwe-GaInAsP series lasers ku-77 K esebenzisa ubuchwepheshe be-liquid phase epitaxy (indlela ye-epitaxy yesigaba se-liquid ukuze kuncishiswe izinto eziqinile eziphuma kwisisombululo bese zizifaka ku-substrate ukuze kukhiqizwe izingqimba ezincane ze-crystal eyodwa. ). Ngo-1988, uchungechunge lwe-GaAs VCSELs lwakhuliswa ubuchwepheshe be-organic chemical vapor deposition (OCVD) ukuze kuzuzwe ukusebenza okuqhubekayo ekamelweni lokushisa. Ngokuthuthuka okuqhubekayo kobuchwepheshe be-epitaxial, izakhiwo ze-semiconductor DBR ezinokubonakala okuphezulu zingenziwa, okusheshisa kakhulu inqubo yocwaningo ye-VCSEL. Ekupheleni kwekhulu lama-20, ngemva kokuba izikhungo zocwaningo sezizame izakhiwo ezihlukene, isimo esivamile se-VCSEL elinganiselwe nge-oxidation sasisethwe kahle kakhulu. Kwabe sekudlulela esigabeni sokuvuthwa, lapho ukusebenza kwakuhlale kuthuthukiswa futhi kwenziwa ngcono.
Umdwebo wesigaba se-laser ephumayo ephezulu ene-oxidation
Indawo esebenzayo iyingxenye ebalulekile yedivayisi. Ngenxa yokuthi umgodi we-VCSEL mfushane kakhulu, i-medium esebenzayo ku-cavity idinga ukunikeza isinxephezelo senzuzo eyengeziwe yemodi ye-lasing.
Okokuqala, izimo ezintathu kufanele zihlangatshezwe ngasikhathi sinye ukuze kukhiqizwe i-laser:
1) ukusatshalaliswa kwe-inversion yenkampani yenethiwekhi kuyasungulwa;
2) i-resonant cavity efanelekile ivumela imisebe evuselelwe ukuthi ibuyiselwe izikhathi eziningi ukuze yakhe i-laser oscillation; futhi
3) umjovo wamanje uqine ngokwanele ukwenza inzuzo ye-optical ibe mkhulu noma ilingane nesamba sokulahlekelwa okuhlukahlukene futhi ihlangabezane nemibandela ethile yamanje.
Izimo ezintathu eziyinhloko zihambisana nomqondo wokuklama wesakhiwo sedivayisi ye-VCSEL. Isifunda esisebenzayo se-VCSEL sisebenzisa ukwakheka komthombo we-quantum ocindezelweyo ukuze kutholwe isisekelo sokubona ukusatshalaliswa kokuguqulwa kwenkampani yenethiwekhi yangaphakathi. Ngasikhathi sinye, i-resonant cavity enokubonakala okufanele iklanyelwe ukwenza ama-photons akhishiwe akhe ama-oscillations ahambisanayo. Okokugcina, umjovo wamanje owanele unikeziwe ukuze unike amandla ama-photon ukuze anqobe ukulahlekelwa okuhlukahlukene kwedivayisi ngokwayo ukuze kwakheke isikhathi eside
Lena yindlela i-Shenzhen HDV Optoelectronic Technology Co., Ltd., inkampani yokuxhumana optical, yachaza ngayo i-VCSEL.