Patlisiso ea morao-rao mabapi le li-laser tse habeli tsa semiconductor
Li-laser tsa semiconductor disc (SDL lasers), tse tsejoang hape e le vertical external cavity surface-emitting lasers (VECSEL), li hohetse tlhokomelo e ngata lilemong tsa morao tjena. E kopanya melemo ea phaello ea semiconductor le li-resonator tse tiileng. Ha e fane feela ka mokhoa o atlehileng oa ho fokotsa moeli oa sebaka sa tlhahiso ea ts'ehetso ea mokhoa o le mong bakeng sa li-lasers tse tloaelehileng tsa semiconductor, empa hape e na le moralo o bonolo oa semiconductor bandgap le litšobotsi tse phahameng tsa ho fumana thepa. E ka bonoa mefuteng e mengata ea maemo a ts'ebeliso, joalo ka lerata le tlaselaser e nang le bophara bo fokolangtlhahiso, ultra-short high-repetition high-repetition pulse generation, high-order harmonic generation, le sodium guide star technology, joalo-joalo Ka tsoelo-pele ea theknoloji, litlhoko tse phahameng li behiloe pele bakeng sa ho feto-fetoha ha maqhubu a maqhubu. Mohlala, mehloli ea leseli e kopaneng ea maqhubu a mabeli e bonts'itse boleng bo holimo haholo ba ts'ebeliso masimong a hlahang joalo ka anti-interference lidar, holographic interferometry, wavelength division multiplexing communication, mid-infrared or terahertz generation, le multi-color optical frequency combs. Mokhoa oa ho fumana khanya e phahameng ea mebala e 'meli ea li-lasers tsa semiconductor disc le ho hatella ka katleho tlholisano ea maruo har'a maqhubu a mangata e' nile ea e-ba bothata ba lipatlisiso lefapheng lena.
Haufinyane tjena, mebala e 'melilaser ea semiconductorsehlopha sa Chaena se hlahisitse moralo o mocha oa li-chip ho rarolla phephetso ena. Ka lipatlisiso tse tebileng tsa lipalo, ba fumane hore ho laola ka nepo palo e amanang le mocheso e amanang le mocheso le litlamorao tsa ho sefa ha semiconductor microcavity ho lebelletsoe ho fihlela taolo e feto-fetohang ea phaello ea mebala e 'meli. Ho ipapisitsoe le sena, sehlopha se atlehile ho theha chip ea 960/1000 nm e phahameng e khanyang. Laser ena e sebetsa ka mokhoa oa mantlha haufi le moeli oa diffraction, e nang le khanya e phahameng hoo e ka bang 310 MW/cm²sr.
Lera la phaello ea disc ea semiconductor ke li-micrometer tse 'maloa feela,' me Fabry-Perot microcavity e thehoa pakeng tsa semiconductor-air interface le tlase e ajoang Bragg reflector. Ho tšoara microcavity ea semiconductor joalo ka filthara e hahelletsoeng ka har'a chip ho tla fetola phaello ea quantum hantle. Ho sa le joalo, phello ea ho sefa ha microcavity le phaello ea semiconductor li na le litekanyetso tse fapaneng tsa ho hoholeha ha mocheso. Ho kopantsoe le taolo ea mocheso, ho fetola le ho laola li-wavelengths tse hlahisoang li ka finyelloa. Ho ipapisitsoe le litšoaneleho tsena, sehlopha se ile sa bala le ho beha tlhoro ea phaello ea quantum hantle ho 950 nm ka mocheso oa 300 K, ka sekhahla sa ho hoholeha ha mocheso oa leqhubu la phaello e ka bang 0.37 nm/K. Ka mor'a moo, sehlopha se ile sa theha "longitudinal constraint factor" ea chip e sebelisa mokhoa oa phetisetso ea matrix, e nang le maqhubu a holimo a ka bang 960 nm le 1000 nm ka ho latellana. Lipapiso li senotse hore sekhahla sa ho hoholeha ha mocheso e ne e le 0.08 nm/K feela. Ka ho sebelisa theknoloji ea tšepe-organic chemical deposition thekenoloji bakeng sa kholo ea epitaxial le ho tsoela pele ho ntlafatsa ts'ebetso ea kholo, li-chips tsa boleng bo phahameng li ile tsa etsoa ka katleho. Liphetho tsa tekanyo ea photoluminescence li lumellana ka ho feletseng le liphello tsa ho etsisa. Ho fokotsa mojaro oa mocheso le ho fihlela phetisetso ea matla a phahameng, mokhoa oa ho paka semiconductor-diamond chip o ntlafalitsoe le ho feta.
Kamora ho qeta ho paka chip, sehlopha se ile sa etsa tlhahlobo e felletseng ea ts'ebetso ea eona ea laser. Ka mokhoa o tsoelang pele oa ts'ebetso, ka ho laola matla a pompo kapa mocheso oa mocheso oa mocheso, bophahamo ba maqhubu bo ka fetoloa habonolo pakeng tsa 960 nm le 1000 nm. Ha matla a pompo a le ka har'a mefuta e itseng, laser e ka boela ea finyella ts'ebetso ea maqhubu a mabeli, ka nako ea nako ea maqhubu ho fihlela ho 39.4 nm. Ka nako ena, matla a phahameng a sa khaotseng a maqhubu a fihla ho 3.8 W. Ho sa le joalo, laser e sebetsa ka mokhoa oa motheo haufi le moeli oa ho fapanyetsana, ka boleng ba boleng ba M² ea 1.1 feela le khanya e ka bang 310 MW/cm²sr. Sehlopha se boetse se entse lipatlisiso mabapi le ts'ebetso ea maqhubu a quasi-continuous wave ealaser. Letšoao la kakaretso la kakaretso le ile la bonoa ka katleho ka ho kenya kristale ea optical LiB₃O₅ nonlinear optical ka har'a sekoti sa resonant, ho netefatsa ho lumellana ha maqhubu a mabeli a maqhubu.
Ka moralo ona o bohlale oa chip, motsoako oa tlhaho oa ho sefa hantle ha quantum le ho sefa ha microcavity o fihletsoe, o rala motheo oa moralo oa ho phethahala ha mehloli ea laser ea mebala e 'meli. Mabapi le matšoao a ts'ebetso, laser ena ea "single-chip dual-color laser" e fihlela khanya e phahameng, e feto-fetoha le maemo le tlhahiso e nepahetseng ea beam ea coaxial. Ho khanya ha eona ho boemong bo ka sehloohong ba machaba lefapheng la hajoale la li-single-chip dual-color semiconductor lasers. Mabapi le ts'ebeliso e sebetsang, katleho ena e lebeletsoe hore e ntlafatse ka mokhoa o nepahetseng ho nepahala ha ho lemoha le ho thibela ho kena-kenana le matla a lidar tse mebala-bala libakeng tse rarahaneng ka ho sebelisa khanya ea eona e phahameng le litšobotsi tse peli tsa mebala. Lefapheng la optical frequency combs, tlhahiso ea eona e tsitsitseng ea li-wavelength tse peli e ka fana ka ts'ehetso ea bohlokoa bakeng sa lits'ebetso tse joalo ka tekanyo e nepahetseng ea spectral le high-resolution Optical sensing.
Nako ea poso: Sep-23-2025