Kev tsim txoj kev pom ntawm lub duab plaub fabcov lasers pulsed
Txheej txheem cej luam ntawm kev tsim txoj kev pom
Ib lub passive mode-locked dual-wavelength dissipative soliton resonant thulium-doped fiber laser raws li lub nonlinear fiber ring mirror qauv.
2. Kev piav qhia txog txoj kev kho qhov muag
Lub dual-wavelength dissipative soliton resonant thulium-dopedlaser fibersiv cov qauv tsim qhov chaw "8" (Daim Duab 1).
Sab laug yog lub voj voog tseem ceeb uas siv ib txoj kev xwb, thaum sab xis yog lub iav fiber ntau uas tsis yog linear. Lub voj voog sab laug uas siv ib txoj kev xwb muaj ib lub bundle splitter, ib lub fiber ntau uas siv 2.7m thulium-doped (SM-TDF-10P130-HE), thiab ib lub coupler fiber ntau uas siv 2 μm band uas muaj coupling ... Ib lub fiber ntau hom optical fiber 75-meter siv los txhim kho cov nyhuv nonlinear. Ntawm no, 90:10 optical fiber coupler siv los ua kom qhov sib txawv ntawm theem nonlinear ntawm kev nthuav dav clockwise thiab counterclockwise. Tag nrho qhov ntev ntawm cov qauv dual-wavelength no yog 89.5 meters. Hauv qhov kev teeb tsa sim no, lub teeb twj tso kua mis thawj zaug dhau los ntawm lub beam combiner kom mus txog qhov nruab nrab thulium-doped optical fiber. Tom qab thulium-doped optical fiber, 90:10 coupler txuas nrog kom ncig 90% ntawm lub zog hauv qhov cavity thiab xa 10% ntawm lub zog tawm ntawm qhov cavity. Tib lub sijhawm, lub lim dej birefringent Lyot yog tsim los ntawm cov fiber ntau optical uas tswj polarization nyob nruab nrab ntawm ob lub polarization controllers thiab polarizer, uas ua lub luag haujlwm hauv kev lim cov spectral wavelengths.
3. Kev paub txog keeb kwm yav dhau los
Tam sim no, muaj ob txoj hauv kev yooj yim rau kev nce lub zog ntawm cov lasers pulsed. Ib txoj hauv kev yog kom txo cov teebmeem nonlinear ncaj qha, suav nrog kev txo qis lub zog siab tshaj plaws ntawm cov pulses los ntawm ntau txoj hauv kev, xws li siv kev tswj hwm kev faib tawm rau cov pulses ncab, cov oscillators loj heev, thiab cov lasers pulsed beam-splitting, thiab lwm yam. Lwm txoj hauv kev yog nrhiav cov txheej txheem tshiab uas tuaj yeem ua siab ntev rau cov theem tsis sib xws, xws li kev sib xws ntawm tus kheej thiab cov pulses rectangular. Txoj kev hais los saum toj no tuaj yeem ua kom lub zog ntawm lub pulse loj dualub tshuab laser pulsedmus rau kaum tawm nanojoules. Dissipative soliton resonance (Dissipative soliton resonance: DSR) yog lub tshuab tsim lub duab plaub fab uas N. Akhmediev et al. tau tshaj tawm thawj zaug hauv xyoo 2008. Tus yam ntxwv ntawm dissipative soliton resonance pulses yog tias, thaum khaws qhov amplitude tas li, qhov dav ntawm lub zog thiab lub zog ntawm lub zog tsis sib cais ntawm lub zog rectangular nce monotonically nrog kev nce ntawm lub zog twj tso kua mis. Qhov no, mus rau qee qhov, tawg los ntawm kev txwv ntawm txoj kev xav soliton ib txwm muaj ntawm lub zog ib leeg. Dissipative soliton resonance tuaj yeem ua tiav los ntawm kev tsim cov khoom nqus tau thiab rov qab nqus tau, xws li cov nyhuv nonlinear polarization rotation (NPR) thiab cov nyhuv iav nonlinear fiber (NOLM). Feem ntau cov ntawv ceeb toom txog kev tsim cov dissipative soliton resonance pulses yog raws li ob lub tshuab xauv hom no.
Lub sijhawm tshaj tawm: Lub Kaum Hli-09-2025