Ubushakashatsi buheruka kubijyanye n'amabara abiri ya semiconductor

Ubushakashatsi buheruka kubijyanye n'amabara abiri ya semiconductor

Disiketi ya Semiconductor (lazeri ya SDL), izwi kandi nka vertical external cavity surface-isohora laseri (VECSEL), yashimishije cyane mumyaka yashize. Ihuza ibyiza byo kunguka igice cya kabiri hamwe na resonator ikomeye. Ntabwo igabanya gusa aho imyuka ihumanya ikirere igarukira kumurongo umwe wuburyo busanzwe bwa lazeri ya semiconductor, ariko inagaragaza imiterere ya semiconductor ya bande igezweho hamwe nibintu byunguka byinshi. Irashobora kugaragara muburyo butandukanye bwo gukoresha ibintu, nkurusaku rukeUmuyoboro mutoIbisohoka, ultra-bigufi cyane-isubiramo pulse, ibisekuru bihanitse bihuza ibisekuruza, hamwe na sodium yubuyobozi bwinyenyeri, nibindi. Hamwe niterambere ryikoranabuhanga, ibisabwa byashyizwe hejuru kugirango uburebure bwabyo bworohe. Kurugero, imirongo ibiri-yumurongo uhuza urumuri rwerekanye agaciro gakomeye mugukoresha mumirima igaragara nka anti-interference lidar, holographic interferometry, umurongo wa interineti igabanya itumanaho, hagati ya infragre cyangwa terahertz, hamwe namabara menshi ya optique yumurongo. Nigute ushobora kugera kumurabyo mwinshi-amabara asohora muri lazeri ya semiconductor no guhagarika neza inyungu zo guhatanira uburebure bwumurongo mwinshi byahoze ari ikibazo cyubushakashatsi muriki gice.

Vuba aha, amabara abirisemiconductor laseritsinda mu Bushinwa ryatanze igishushanyo mbonera cya chip kugirango gikemure iki kibazo. Binyuze mu bushakashatsi bwimbitse bw’imibare, basanze kugenzura neza ubushyuhe bujyanye nubushyuhe bujyanye no gushungura neza hamwe na microcavity ya semiconductor byunguka byitezwe ko bizagerwaho byoroshye kugenzura inyungu zibiri. Dufatiye kuri ibi, itsinda ryateguye neza 960/1000 nm yo hejuru-yunguka cyane. Iyi lazeri ikora muburyo bwibanze hafi yimipaka itandukanijwe, hamwe nubuso busohoka bugera kuri MW 310 / cm²sr.

Inyungu ya disiki ya semiconductor ni micrometero nkeya gusa, kandi microcavity ya Fabry-Perot ikorwa hagati ya semiconductor-air interface hamwe hepfo yagabanijwe ya Bragg. Gufata microcavitike ya semiconductor nkiyubatswe muyungurura ya filteri ya chip bizahindura inyungu za kwantani neza. Hagati aho, ingaruka za microcavity zo kuyungurura hamwe no kwiyongera kwa semiconductor bifite igipimo gitandukanye cyubushyuhe. Ufatanije no kugenzura ubushyuhe, guhinduranya no kugenzura ibyasohotse byumuvuduko urashobora kugerwaho. Hashingiwe kuri ibyo biranga, itsinda ryabaze kandi rishyiraho inyungu yo hejuru ya kwant kuri 950 nm kuri 300 K ubushyuhe, hamwe nubushyuhe bwo kugabanuka kwubushyuhe bwikigereranyo cya 0.37 nm / K. Icyakurikiyeho, itsinda ryateguye ibintu birebire bya chip ikoresheje uburyo bwo kohereza matrix, hamwe nuburebure bwumurambararo wa 960 nm na 1000 nm. Ibigereranyo byagaragaje ko igipimo cyo kugabanuka kwubushyuhe cyari 0.08 nm / K. Ukoresheje ibyuma-ngengabihe bya chimique yohereza imyuka kugirango ikure epitaxial kandi ikomeze itezimbere imikurire, chip yo mu rwego rwo hejuru yunguka neza. Ibisubizo byo gupima Photoluminescence birahuye rwose nibisubizo byikigereranyo. Kugabanya umutwaro wumuriro no kugera kumashanyarazi menshi, gahunda yo gupakira semiconductor-diamant chip yatejwe imbere kurushaho.

Nyuma yo kurangiza gupakira chip, itsinda ryakoze isuzuma ryuzuye ryimikorere ya laser. Muburyo bukomeza bwo gukora, mugucunga ingufu za pompe cyangwa ubushyuhe bwa sink ubushyuhe, uburebure bwumuriro burashobora guhinduka kuburyo bworoshye hagati ya 960 nm na 1000 nm. Iyo imbaraga za pompe ziri murwego runaka, lazeri irashobora kandi kugera kubikorwa byuburebure-bubiri, hamwe nuburebure bwumurambararo wa 39.4 nm. Muri iki gihe, imbaraga ntarengwa zihoraho zigera kuri 3.8 W. Hagati aho, lazeri ikora muburyo bwibanze hafi yimipaka itandukanijwe, hamwe nibintu byiza bya M² ya 1.1 gusa kandi umucyo ugera kuri MW 310 / cm²sr. Itsinda ryakoze kandi ubushakashatsi kuri quasi-ikomeza umurongo wimikorere yalaser. Igiteranyo cyumubare wikimenyetso cyagaragaye neza mugushyiramo LiB₃O₅ idafite umurongo wa optique kristal mu cyuho cya resonant, byemeza guhuza uburebure bwumurongo wa kabiri.

Binyuze muri iki gishushanyo mbonera cya chip, guhuza ibinyabuzima bya kwant byunguka neza kuyungurura no kuyungurura microcavity byagezweho, hashyirwaho urufatiro rwo gushushanya ibice bibiri byamabara ya laser. Kubireba ibipimo ngenderwaho, iyi chip-imwe imwe-amabara abiri ya laser igera kumurabyo mwinshi, guhinduka kwinshi hamwe nibisohoka neza bya coaxial beam. Umucyo wacyo uri kurwego mpuzamahanga ruyoboye murwego rwubu rwa chip imwe imwe-amabara abiri ya semiconductor laseri. Kubijyanye no gushyira mu bikorwa, ibyagezweho biteganijwe ko bizamura neza ubushobozi bwo kumenya no kurwanya-kwivanga kwa lidar y'amabara menshi mubidukikije bigoye ukoresheje urumuri rwinshi hamwe nibiranga amabara abiri. Mubyerekeranye na optique yumurongo wa combs, itajegajega ya kabiri-yumurambararo irashobora gutanga infashanyo yingenzi kubisabwa nko gupima neza ibintu neza hamwe no gukemura neza.