Tsis ntev los no, Ruichuang Research Institute thiab Ruichuang Photonics pab pawg tau ua tiav qhov tseem ceeb hauv kev tshawb fawb ntawm nruab nrab-infrared interband cascade laser (ICL). Pab neeg no tau paub txog kev ua haujlwm siab, chav ua haujlwm kub tsis tu ncua interband cascade lasers nrog ntau lub zog excitation wavelengths, thiab ua ke nrog molecular-beam epitaxy kom loj hlob interband cascade laser cov ntaub ntawv ntawm InAs substrates, thiab npaj nqaim-ridge li nrog chav- kub excitation wavelengths ze rau 4.6 μm. Chav tsev kub excitation wavelengths ntawm nqaim ridge li yog ze rau 4.6μm thiab 5.2μm.
Nws tau tshaj tawm tias feem ntau interband cascade lasers yog zus ntawm GaSb substrates, thaum lub interband cascade lasers qhia los ntawm Ruichuang pab neeg yog zus nyob rau hauv InAs substrates, nrog lub waveguide cladding muaj xws li ib tug InAs / AlSb superlattice thiab ib tug heev doped InAs txheej. Piv nrog rau cov GaSb-raws li interband cascade lasers, InAs-raws li interband lasers muaj qis dua qhov tam sim no qhov ceev ntawm qhov ntev wavelengths (piv txwv li, ntev dua 4.5 μm).
(a) Nruam excitation spectra ntawm ib lub cuab yeej nrog 4.6 μm wavelength, 2 mm kab noj hniav ntev, thiab 10 μm ridge dav ntawm 20 degree thiab 64 degree;
(b) Nruam tam sim no-voltage-power curves ntawm tib lub cuab yeej ntawm 20 degree -64 degree
Rau lub interband cascade laser ntawm 4.6 μm wavelength, chav tsev kub pulse pib tam sim no ceev ntawm lub dav-ridge ntaus ntawv yog 292 A / cm2; lub nqaim-ridge ntaus ntawv nrog ib tug 2-mm kab noj hniav ntev thiab ib tug 10-μm ridge dav muaj ib tug nruam khiav hauj lwm kub txog li 64 degree thiab ib chav tsev kub tso zis hwj chim ntawm 20 mW; qhov no yog qhov siab tshaj plaws kev khiav hauj lwm qhov kub thiab txias tshaj tawm kom deb li deb ntawm ib lub wavelength zoo sib xws. Rau ib qho interband cascade laser ntawm ib lub wavelength ntawm 5.2 μm, chav tsev kub mem tes pib tam sim no ceev ntawm lub dav-ridge ntaus ntawv yog 306 A / cm2, thaum lub nqaim-ridge ntaus ntawv nrog ib tug kab noj hniav ntev ntawm 2 hli thiab ib tug ridge. dav ntawm 10 μm mus txog qhov siab tshaj plaws kev khiav hauj lwm kub ntawm 41 degree, nrog rau chav tsev kub tso zis hwj chim ntawm 10 mW, qhov twg qhov pib tam sim no ceev yog qhov qis tshaj qhia nyob rau hauv zoo sib xws wavelengths.
Cov ntaub ntawv hais txog "High-kub nruam-yoj ua haujlwm ntawm InAs-based interband cascade laser" (DOI: 10.1063/5.0171089) thiab "InAs-based interband cascade laser ua haujlwm ntawm 5.17 μm hauv nruam nthwv dej saum chav sov" (10.1109 / LPT. 2023.3335856) luam tawm hauv Applied Physics Letters thiab IEEE Photonics Technology Letters, ntsig txog.
(a) Nruam excitation spectra ntawm ib lub cuab yeej nrog 5.2 μm wavelength, 2 hli kab noj hniav ntev, thiab 10 μm ridge dav ntawm 15 degree thiab 41 degree;
(b) Nruam tam sim no-voltage-power curves ntawm tib lub cuab yeej ntawm 15 degree thiab 41 degree .
Lub interband cascade laser yog raws li lub zog band engineering thiab quantum mechanics los tsim kom muaj kev zoo siab, nrog rau cov ntsiab lus siab thiab ntau yam teeb meem kev loj hlob, uas yog ib qho tseem ceeb embodiment ntawm lub teb chaws core technology ntawm nano thiab quantum li, thiab tam sim no tau teev raws li ib tug tseem ceeb nruab nrab. -infrared laser qhov chaw ua ke nrog quantum cascade laser (QCL), uas muaj cov ntawv thov tseem ceeb thiab muaj txiaj ntsig hauv thaj chaw xws li kev saib xyuas ib puag ncig, kev tswj hwm kev lag luam, kev kuaj mob thiab kev sib txuas lus dawb. Nws muaj qhov tseem ceeb ntawm daim ntawv thov tus nqi thiab qhov tseem ceeb ntawm kev tshawb fawb hauv thaj chaw ntawm kev saib xyuas ib puag ncig, kev tswj hwm kev lag luam, kev kuaj mob thiab kev sib txuas lus pub dawb.
Thawj lub tswv yim ntawm interband cascade laser yog thawj zaug tau thov los ntawm Prof. Ruiqing Yang (Rui Q. Yang) ntawm University of Oklahoma xyoo 1994, thiab hauv paus ze ntawm lattice-matched InAs / GaSb / AlSb peb-tsib cov khoom siv los tsim. nws, thiab feem ntau ntawm thaj chaw nquag yog InAs/GaInSb ob hom quantum qhov dej, uas tuaj yeem npog lub wavelength ntawm nruab nrab-infrared mus rau deb-infrared. Lub peev xwm tuaj yeem npog lub wavelength ntawm nruab nrab-infrared mus rau far-infrared.
Interband cascade lasers muab qhov zoo ntawm cov tsoos semiconductor diode lasers thiab quantum cascade lasers, thiab muaj lub zog qis zog thiab qhov pib tam sim no ceev dua li quantum cascade lasers uas tseem npog qhov nruab nrab-infrared wavelength ntau yam, thiab qhov no tsis tshua muaj zog noj kom zoo dua yog qhov tseem ceeb heev. hauv qee daim ntawv thov uas xav tau cov khoom siv nqa tau yooj yim thiab roj teeb.
Tam sim no, lub lag luam thoob ntiaj teb interband cascade laser tseem yog cov tuam txhab txawv teb chaws, thiab kev lag luam hauv tsev tseem nyob rau theem pib ntawm kev tsim kho kev lag luam. Ob txoj haujlwm tau tshaj tawm hauv daim ntawv no qhia tau hais tias Ruichuang Photonics tau mus txog qib siab tshaj plaws hauv ntau yam ntawm epitaxial tsim thiab kev npaj cov cuab yeej ntawm interband cascade lasers, thiab tau dhau los ua ib lub lag luam uas tau paub txog technology ntawm high-performance interband cascade lasers. Txoj haujlwm no tseem tsim lub hauv paus ruaj khov rau kev txhim kho thiab kev tsim khoom loj ntawm ib hom tunable DFB interband cascade lasers.
