Ke englaser e moqotetsane ea bophara ba mola?
Lesetara e nang le bophara ba mola o moqotetsane, Polelwana "bophara ba mola" e bolela bophara ba mola o shebaneng lelasersebakeng sa maqhubu, seo hangata se lekanngoang ho ya ka bophara bo felletseng ba halofo ya tlhoro ya spectrum (FWHM). Bophara ba mola bo angwa haholo ke mahlaseli a sa reroang a diathomo kapa di-ion tse hlasimolohileng, lerata la mohato, ho thothomela ha resonator ka boiketsetso, ho thothomela ha mocheso le mabaka a mang a kantle. Ha boleng ba bophara ba mola bo le bonyenyane, bohlweki ba spectrum bo phahame, ke hore, ho ba le monochromaticity e ntle ya laser. Li-laser tse nang le litšobotsi tse jwalo hangata di na le lerata le lenyenyane haholo la mohato kapa maqhubu le lerata le lenyenyane haholo la matla a amanang. Ka nako e ts'oanang, ha boleng ba bophara ba mola ba laser bo le bonyenyane, ho ba le kutlwano e tsamaellanang le yona ho matlafala, e bonahatswang e le bolelele bo bolelele haholo ba kutlwano.
Ho phethahatsa le ho sebelisa laser e moqotetsane ea linewidth
Ka lebaka la bophara ba gain linewidth ba tlhaho ba ntho e sebetsang ea laser, ho batla ho le thata ho lemoha ka kotloloho tlhahiso ea laser e moqotetsane ea linewidth ka ho itšetleha ka oscillator ea setso ka boeona. E le ho hlokomela ts'ebetso ea laser e moqotetsane ea linewidth, hangata ho hlokahala ho sebelisa li-filter, grating le lisebelisoa tse ling ho fokotsa kapa ho khetha modulus ea longitudinal ho gain spectrum, ho eketsa phapang ea net gain pakeng tsa mekhoa ea longitudinal, e le hore ho be le oscillation e 'maloa kapa esita le e le' ngoe feela ea longitudinal mode ho resonator ea laser. Ts'ebetsong ena, hangata ho hlokahala ho laola tšusumetso ea lerata tlhahisong ea laser, le ho fokotsa ho atoloha ha mela ea spectral e bakoang ke ho thothomela le liphetoho tsa mocheso oa tikoloho ea kantle; Ka nako e ts'oanang, e ka boela ea kopanngoa le tlhahlobo ea sekhahla sa spectral ea lerata la mohato kapa maqhubu ho utloisisa mohloli oa lerata le ho ntlafatsa moralo oa laser, e le ho fihlela tlhahiso e tsitsitseng ea laser e moqotetsane ea linewidth.
A re shebeng ho phethahala ha ts'ebetso e moqotetsane ea bolelele ba mola oa mela ea mefuta e fapaneng ea laser.
Li-laser tsa semiconductor li na le melemo ea boholo bo bonyenyane, bokhoni bo phahameng, bophelo bo bolelele le melemo ea moruo.
Resonator ea optical ea Fabry-Perot (FP) e sebelisoang mefuteng ea setsoli-laser tsa semiconductorka kakaretso e sisinyeha ka mokhoa oa bolelele bo bongata, 'me bophara ba mola oa tlhahiso bo pharaletse haholo, kahoo hoa hlokahala ho eketsa maikutlo a optical ho fumana tlhahiso ea bophara ba mola o moqotetsane.
Distributed feedback (DFB Laser) le Distributed Bragg reflection (DBR) ke di-laser tse pedi tse tlwaelehileng tsa semiconductor feedback ya optical ya ka hare. Ka lebaka la grating pitch e nyane le khetho e ntle ya wavelength, ho bonolo ho fihlella tlhahiso e tsitsitseng ya mola o moqotetsane wa maqhubu a le mong. Phapang e kgolo pakeng tsa dibopeho tsena tse pedi ke boemo ba grating: sebopeho sa DFB Laser hangata se aba sebopeho sa periodic sa Bragg grating ho pholletsa le resonator, mme resonator ya DBR hangata e bopilwe ka sebopeho sa grating ya reflection le sebaka sa gain se kentsweng hodima bokahodimo ba ho qetela. Ho phaella moo, di-laser tsa DFB di sebedisa di-grating tse kentsweng tse nang le phapang e tlase ya index ya refractive le reflectivity e tlase. Di-laser tsa DBR di sebedisa di-grating tsa bokahodimo tse nang le phapang e phahameng ya index ya refractive le reflectivity e phahameng. Dibopeho ka bobedi di na le mefuta e meholo ya di-spectral mme di ka etsa tokiso ya wavelength ntle le ho tlola ka mokgwa ho ya ho di-nanometer tse mmalwa, moo laser ya DBR e nang le mefuta e mengata ya tuning ho fetaLesetara ea DFBHo phaella moo, theknoloji ya karabelo ya mahlo ya cavity ya kantle, e sebedisang dikarolo tsa mahlo tsa kantle ho araba lesedi le tswang la chip ya laser ya semiconductor le ho kgetha maqhubu, e ka boela ya phethahatsa tshebetso e moqotetsane ya mola wa laser ya semiconductor.
(2) Li-laser tsa faeba
Li-laser tsa faeba li na le bokhoni bo phahameng ba ho fetolela pompo, boleng bo botle ba mahlaseli le bokhoni bo phahameng ba ho kopanya, e leng lihlooho tse chesang tsa lipatlisiso tšimong ea laser. Moelelong oa mehla ea tlhahisoleseling, li-laser tsa faeba li lumellana hantle le litsamaiso tsa puisano tsa fiber ea optical tse teng 'marakeng. Laser ea fiber ea maqhubu a le mong e nang le melemo ea bophara ba mola o moqotetsane, lerata le tlaase le ho lumellana ho hoholo e fetohile e 'ngoe ea litsela tsa bohlokoa tsa nts'etsopele ea eona.
Ts'ebetso ea mokhoa o le mong oa longitudinal ke motheo oa laser ea fiber ho fihlela tlhahiso e moqotetsane ea bophara ba mola, hangata ho latela sebopeho sa resonator ea laser ea fiber ea maqhubu a le mong e ka aroloa ka mofuta oa DFB, mofuta oa DBR le mofuta oa lesale. Har'a tsona, molao-motheo oa ts'ebetso oa laser ea DFB Laser le DBR ea maqhubu a le mong o tšoana le oa laser ea semiconductor ea DFB le DBR.
(3)Lesetara ea boemo bo tiileng
Ka 1960, laser ea pele ea ruby lefatšeng e ne e le laser ea boemo bo tiileng, e khetholloang ka matla a tlhahiso e phahameng le tšireletso e pharaletseng ea bolelele ba leqhubu. Sebopeho se ikhethang sa sebaka sa laser ea boemo bo tiileng se etsa hore e tenyetsehe haholoanyane moralong oa tlhahiso e moqotetsane ea mola o moqotetsane. Hona joale, mekhoa e meholo e sebelisitsoeng e kenyelletsa mokhoa o mokhutšoanyane oa cavity, mokhoa oa cavity oa lesale le le leng, mokhoa o tloaelehileng oa intracavity, mokhoa oa cavity oa torsion pendulum, mokhoa oa Bragg grating oa volume le mokhoa oa ho kenya peo.
Nako ea poso: Phuptjane-03-2025