Idizayini yendlela yokubona kanxandei-pulsed lasers
Uhlolojikelele lokuklama kwendlela ye-Optical
Imodi yokungenzi lutho ekhiywe i-dual-wavelength dissipative soliton resonant thulium-doped fiber laser esekelwe esakhiweni sesibuko sendandatho yefayibha engaqondile.
2. Incazelo yendlela yokubona
I-double-wavelength dissipative soliton resonant thulium-dopedi-fiber laseryamukela idizayini yesakhiwo somgodi omise okwe-“8″ (Umfanekiso 1).
Ingxenye yesokunxele iyiluphu eyinhloko ye-unidirectional, kanti ingxenye yesokudla iyisakhiwo sesibuko se-fiber optical loop esingaqondile. Iluphu ye-unidirectional kwesokunxele ihlanganisa isihlukanisi senqwaba, i-fiber optical fiber engu-2.7m thulium-doped (SM-TDF-10P130-HE), kanye ne-2 μm band optical fiber coupler ene-coefficient ehlanganisiwe engu-90:10. I-Isolator eyodwa encike kwi-polarization (PDI), Izilawuli ze-Polarization ezimbili (izilawuli ze-Polarization: PC), i-0.41m Polarization-maintenance Fiber (PMF). Isakhiwo sesibuko sendandatho ye-fiber optic engaqondile kwesokudla sifinyelelwa ngokuhlanganisa ukukhanya kusuka ku-loop ye-unidirectional kwesokunxele kuya kusibuko sendandatho ye-fiber optic engaqondile kwesokudla ngokusebenzisa i-coupler ebonakalayo yesakhiwo engu-2×2 ene-coefficient engu-90:10. Isakhiwo sesibuko sendandatho ye-fiber optical esingaqondile kwesokudla sihlanganisa i-fiber optical (SMF-28e) engamamitha angu-75 ubude kanye nesilawuli se-polarization. I-fibre ye-optical yamamitha angu-75 yemodi eyodwa isetshenziselwa ukuthuthukisa umphumela ongaqondile. Lapha, kusetshenziswa i-90:10 optical fiber coupler ukuze kwandiswe umehluko wesigaba esingaqondile phakathi kokusabalalisa njengokuhamba kwewashi nokuphikisana newashi. Ubude obuphelele balesi sakhiwo se-wavelength ekabili singamamitha angu-89.5. Kulokhu kusetha kokuhlola, ukukhanya kwephampu kuqala kudlule kusihlanganisi se-beam ukuze kufinyelele ku-fiber optical fibre ye-thulium-doped medium. Ngemuva kwe-thulium-doped optical fiber, i-coupler engu-90:10 ixhunywa ukuze ijikeleze u-90% wamandla ngaphakathi kwendawo futhi ithumele u-10% wamandla ngaphandle kwesikhala. Ngesikhathi esifanayo, isihlungi se-Lyot esine-birefringent sakhiwe i-polarization-maintaining optical fibre etholakala phakathi kwezilawuli ezimbili ze-polarization kanye ne-polarizer, edlala indima ekuhlungeni ubude be-spectral wavelength.
3. Ulwazi lwesizinda
Njengamanje, kunezindlela ezimbili eziyisisekelo zokwandisa amandla okushaya kwe-pulsed lasers. Enye indlela iwukunciphisa ngokuqondile imiphumela engaqondile, okuhlanganisa ukwehlisa amandla aphezulu amapulse ngokusebenzisa izindlela ezihlukahlukene, njengokusebenzisa ukuphathwa kokuhlakazwa kwama-pulses anwetshiwe, ama-oscillator amakhulu atshiyozayo, nama-laser ahlukanisayo ama-pulsed, njll. Enye indlela iwukufuna izindlela ezintsha ezingakwazi ukubekezelela ukunqwabelana kwesigaba esingenawo umugqa, njengokufana nokufana nokuphindaphindayo. Indlela eshiwo ngenhla ingakhulisa ngempumelelo amandla okushaya kwenhliziyoi-pulsed laseremashumini ama-nanojoules. I-dissipative soliton resonance (i-Dissipative soliton resonance: DSR) iyindlela yokwakheka komugqa ongunxande eyahlongozwa okokuqala ngu-N. Akhmediev et al. ngo-2008. Isici se-dissipative soliton resonance pulses ukuthi, ngenkathi kugcinwa i-amplitude ingaguquki, ububanzi be-pulse namandla e-non-wave ehlukanisa ishayela elingunxande akhuphuka ngokulinganayo ngokwanda kwamandla wepompo. Lokhu, ngokwezinga elithile, kweqa umkhawulo wethiyori yendabuko ye-soliton kumandla we-single-pulse. I-dissipative soliton resonance ingafinyelelwa ngokwakha ukumuncwa okugcwele kanye nokuhlehlisa ukumuncwa okugcwele, okufana nomthelela we-nonlinear polarization rotation (NPR) kanye nomphumela we-nonlinear fiber ring mirror (NOLM). Imibiko eminingi mayelana nokukhiqizwa kwe-dissipative soliton resonance pulses isekelwe kulezi zindlela ezimbili zokukhiya imodi.
Isikhathi sokuthumela: Oct-09-2025