Taw qhia rau ntsug kab noj hniav nto emitting semiconductor laser (VCSEL)

Taw qhia rau ntsug kab noj hniav nto emittingsemiconductor laser(VCSEL)
Ntsug sab nraud kab noj hniav nto-emitting lasers tau tsim nyob rau hauv nruab nrab-1990s kom kov yeej ib qho teeb meem tseem ceeb uas tau plagued txoj kev loj hlob ntawm ib txwm semiconductor lasers: yuav ua li cas los tsim high-power laser outputs nrog high beam zoo nyob rau hauv lub hauv paus transverse hom.
Vertical sab nraud kab noj hniav nto-emitting lasers (Vecsels), kuj hu uasemiconductor disc lasers(SDL), yog ib tus tswv cuab tshiab ntawm laser tsev neeg. Nws tuaj yeem tsim cov emission wavelength los ntawm kev hloov cov khoom muaj pes tsawg leeg thiab thickness ntawm quantum zoo nyob rau hauv lub semiconductor nce nruab nrab, thiab ua ke nrog intracavity zaus ob zaug yuav npog ib tug dav wavelength ntau yam los ntawm ultraviolet mus rau deb infrared, ua tau zoo zog tso zis thaum tuav ib tug tsawg divergence. Lub kaum sab xis symmetric laser beam. Lub laser resonator yog tsim los ntawm lub hauv qab DBR qauv ntawm lub nce nti thiab sab nraud tso zis coupling daim iav. Qhov tshwj xeeb sab nraud resonator qauv no tso cai rau cov ntsiab lus kho qhov muag tso rau hauv kab noj hniav rau kev ua haujlwm xws li zaus ob npaug, qhov sib txawv ntawm qhov sib txawv, thiab hom-locking, ua rau VECSEL zoo tagnrho.laser qhov chawrau kev siv xws li biophotonics, spectroscopy,tshuaj laser, thiab laser projection.
Lub resonator ntawm VC-nto emitting semiconductor laser yog perpendicular mus rau lub dav hlau qhov chaw nyob rau hauv lub active cheeb tsam, thiab nws cov zis lub teeb yog perpendicular mus rau lub dav hlau ntawm lub active cheeb tsam, raws li qhia nyob rau hauv daim duab.VCSEL muaj qhov tshwj xeeb zoo, xws li me me. qhov loj me, siab zaus, zoo beam zoo, kab noj hniav loj qhov chaw puas tsuaj, thiab cov txheej txheem ntau lawm kuj yooj yim. Nws qhia tau hais tias kev ua tau zoo heev hauv kev siv cov khoom siv laser, kev sib txuas lus kho qhov muag thiab lub moos kho qhov muag. Txawm li cas los xij, VCsels tsis tuaj yeem tau txais cov lasers siab tshaj li qib watt, yog li lawv tsis tuaj yeem siv rau hauv thaj chaw uas xav tau lub zog siab.

Lub laser resonator ntawm VCSEL yog tsim los ntawm ib tug faib Bragg reflector (DBR) muaj li ntawm ntau txheej epitaxial qauv ntawm semiconductor khoom nyob rau hauv ob sab sauv thiab sab sab ntawm lub active cheeb tsam, uas txawv heev ntawm covlaserresonator tsim los ntawm cleavage dav hlau hauv EEL. Cov kev taw qhia ntawm VCSEL optical resonator yog perpendicular mus rau lub nti nto, lub laser tso zis kuj perpendicular mus rau lub nti nto, thiab lub reflectivity ntawm ob sab ntawm lub DBR yog ntau dua li ntawm lub EEL tov dav hlau.
Qhov ntev ntawm lub laser resonator ntawm VCSEL feem ntau yog ob peb microns, uas yog tsawg dua li ntawm millimeter resonator ntawm EEL, thiab ib txoj kev nce tau los ntawm qhov chaw kho qhov muag oscillation hauv kab noj hniav yog tsawg. Txawm hais tias qhov tseem ceeb transverse hom tso zis tuaj yeem ua tiav, cov zis hluav taws xob tuaj yeem ncav cuag ob peb milliwatts. Tus ntoo khaub lig-section profile ntawm VCSEL tso zis laser beam yog ncig, thiab lub divergence lub kaum ntse ntse me dua li ntawm ntug-emitting laser beam. Yuav kom ua tiav lub zog hluav taws xob siab ntawm VCSEL, nws yog ib qho tsim nyog yuav tsum tau ua kom cov cheeb tsam luminous kom tau txais txiaj ntsig ntau dua, thiab qhov nce ntawm thaj tsam luminous yuav ua rau cov zis laser los ua ntau hom tso zis. Nyob rau tib lub sijhawm, nws yog qhov nyuaj rau kev ua tiav cov kev txhaj tshuaj tam sim no hauv thaj tsam loj luminous, thiab qhov tsis sib xws tam sim no txhaj tshuaj yuav ua rau cov khib nyiab pov tseg ntau dua. Hauv luv luv, VCSEL tuaj yeem tso tawm cov qauv yooj yim ncig symmetric qhov chaw los ntawm kev tsim qauv tsim nyog, tab sis tso zis hwj chim yog tsawg thaum cov zis yog ib hom.Yog li ntawd, ntau VCsels feem ntau integrated rau hauv cov zis hom.