VCSEL, iyo inonzi Vertical Cavity Surface Emitting Laser yakazara, imhando ye semiconductor laser. Parizvino, maVCSEL mazhinji akavakirwa paGaAs semiconductors, uye emission wavelength inonyanya muinfrared wave band.
Muna 1977, Muzvinafundo Ika Kenichi weTokyo University of Technology akatanga kutaura pfungwa yeraser-cavity surface-emitting laser. Mumazuva ekutanga, ainyanya kuda kuwana imwechete longitudinal modhi semiconductor laser ine yakagadzikana kubuda nekupfupisa iyo cavity urefu. Nekudaro, nekuda kweiyi dhizaini ipfupi nzira yekuwana kureba, zvaive zvakaoma kuwana laser lasing, saka yekutanga tsvagiridzo yeVCSEL yakarebeswa. Makore maviri gare gare, Muzvinafundo Yihe Jianyi akabudirira kuona pulsed lasing yeGaInAsP series lasers pa77 K vachishandisa liquid phase epitaxy tekinoroji (iyo nzira yemvura-phase epitaxy yekunayisa zvinhu zvakasimba kubva mumhinduro uye kuzviisa pane substrate kuti ibudise imwe-crystal matete akaturikidzana. ) Muna 1988, maGaAs akatevedzana maVCSEL akakura nehunyanzvi hwemakemikari vapor deposition (OCVD) tekinoroji kuti iwane kuenderera mberi kwekushanda pane tembiricha. Nekuvandudzwa kunogara kuchiitwa epitaxial tekinoroji, semiconductor DBR zvimiro zvine high reflectivity zvinogona kugadzirwa, izvo zvinonyanya kukurumidza kuita yekutsvagisa yeVCSEL. Pakupera kwezana ramakore rechi20, mushure mekunge masangano ekutsvagisa aedza zvimiro zvakasiyana, chimiro cheiyo oxidation-inogumira VCSEL yaive yakanaka kwazvo. Yakabva yapinda munhanho yekukura, uko kuita kwaigara kwakagadziridzwa nekuvandudzwa.
Sectional dhayagiramu ye oxidation yakaganhurwa yepamusoro emitting laser
Nharaunda inoshanda ndiyo chikamu chakakosha chechigadzirwa. Nekuti iyo VCSEL mhango ipfupi kwazvo, iyo inoshanda yepakati mugomba inoda kupa yakawanda kuwana muripo weiyo lasing modhi.
Chekutanga pane zvese, matatu mamiriro anofanirwa kusangana panguva imwe chete kugadzira laser:
1) iyo inotakura inversion kugovera munharaunda inoshanda inotangwa;
2) akakodzera resonant mhango inobvumira inosimudzira mwaranzi kudyiswa kumashure kakawanda kuti iite laser oscillation; uye
3) jekiseni razvino rakasimba zvakakwana kuita kuti iyo yemaziso iwane yakakura kupfuura kana yakaenzana nehuwandu hwekurasikirwa kwakasiyana uye kusangana nemamwe mamiriro ezvino pachikumbaridzo.
Iwo matatu ekutanga mamiriro anoenderana nedhizaini pfungwa yeVCSEL mudziyo chimiro. Nharaunda inoshanda yeVCSEL inoshandisa strained quantum well structure kusimbisa hwaro hwekuona mukati mekutakura inversion kugovera. Panguva imwecheteyo, mhango ine resonant ine reflectivity yakakodzera yakagadzirirwa kuita kuti mafotoni akabudiswa aite maoscillations akabatana. Chekupedzisira, jekiseni rakakwana razvino rinopihwa kuitira kuti mafotoni akunde kurasikirwa kwakasiyana kwechigadzirwa pachacho kugadzira chinogara
Iyi ndiyo nzira iyo Shenzhen HDV Optoelectronic Technology Co., Ltd., kambani ye optical communication, yakatsanangura VCSEL.