Ngenisaama-laser e-fiber pulsed
Ama-laser e-Fiber Pulsed akhonaamadivayisi e-laserezisebenzisa imicu ehlanganiswe nama-ion omhlaba angavamile (njenge-ytterbium, i-erbium, i-thulium, njll.) njenge-gain medium. Ziqukethe i-gain medium, i-optical resonant cavity, kanye nomthombo wephampu. Ubuchwepheshe bayo bokukhiqiza i-pulse buhlanganisa kakhulu ubuchwepheshe be-Q-switching (izinga le-nanosecond), i-active mode-locking (izinga le-picosecond), i-passive mode-locking (izinga le-femtosecond), kanye nobuchwepheshe be-main oscillation power amplification (MOPA).
Izinhlelo zokusebenza zezimboni zihlanganisa ukusika insimbi, ukushisela, ukuhlanza nge-laser kanye nokusika i-TAB yebhethri le-lithium ensimini entsha yamandla, ngamandla okukhipha amamodi amaningi afinyelela ezingeni lama-watt ayizinkulungwane eziyishumi. Emkhakheni we-lidar, ama-laser a-pulsed angu-1550nm, anamandla aphezulu okushaya kwenhliziyo kanye nezici eziphephile emehlweni, asetshenziswa ezinhlelweni ze-radar ezihlukanisiwe nezifakwe emotweni.
Izinhlobo zemikhiqizo eziyinhloko zifaka uhlobo lwe-Q-switched, uhlobo lwe-MOPA kanye ne-fiber enamandla amakhuluama-laser ashukunyiswayoIsigaba:
1. I-laser yefayibha eshintshiwe nge-Q: Umgomo wokushintsha kwe-Q ukufaka idivayisi elungisekayo yokulahleka ngaphakathi kwe-laser. Ezinkathini eziningi zesikhathi, i-laser inokulahlekelwa okukhulu futhi cishe akukho okukhipha ukukhanya. Esikhathini esifushane kakhulu, ukunciphisa ukulahlekelwa kwedivayisi kwenza i-laser ikwazi ukukhipha i-pulse emfushane kakhulu. Ama-laser efayibha eshintshiwe nge-Q angatholakala ngokusebenzayo noma ngokunganaki. Ubuchwepheshe obusebenzayo buvame ukuhilela ukufaka i-modulator yokuqina ngaphakathi kwesikhala ukulawula ukulahleka kwe-laser. Amasu angasebenzi asebenzisa ama-absorber agcwele noma eminye imiphumela engeyona eqondile njengokusakazeka kwe-Raman okushukunyiswayo kanye nokusakazeka kwe-Brillouin okushukunyiswayo ukwakha izindlela ze-Q-modulation. Ama-pulse avame ukukhiqizwa ngezindlela ze-Q-switching asezingeni le-nanosecond. Uma kuzokhiqizwa ama-pulse amafushane, angatholakala ngendlela yokukhiya imodi.
2. I-laser yefayibha ekhiywe ngemodi: Ingakhiqiza ama-pulse amafushane kakhulu ngokusebenzisa izindlela ze-active mode-locking noma ze-passive mode-locking. Ngenxa yesikhathi sokuphendula se-modulator, ububanzi be-pulse obukhiqizwa yi-active mode-locking ngokuvamile busezingeni le-picosecond. I-Passive mode-locking isebenzisa amadivayisi e-passive mode-locking, anesikhathi esifushane kakhulu sokuphendula futhi angakhiqiza ama-pulse esikalini se-femtosecond.
Nasi isingeniso esifushane sesimiso sokukhiya isikhunta.
Kunezindlela eziningi ezinde ezinde emgodini ophendulayo we-laser. Kumgodi omise okwendandatho, isikhawu semvamisa yezindlela ezinde silingana ne-/CCL, lapho u-C kuyijubane lokukhanya kanti i-CL ubude bendlela yokukhanya yokukhanya kwesignali ehamba uhambo olulodwa olujikelezayo ngaphakathi komgodi. Ngokuvamile, i-bandwidth yokuthola yama-fiber lasers inkulu kakhulu, futhi inani elikhulu lezindlela ezinde zisebenza ngasikhathi sinye. Inani eliphelele lezindlela i-laser engazisebenzisa lincike esikhawulweni semodi ende ∆ν kanye ne-bandwidth yokuthola ye-gain medium. Uma isikhawu semodi ende sincane, kulapho i-bandwidth yokuthola ye-medium iba nkulu, futhi izindlela ezinde zingasekelwa. Ngokuphambene nalokho, kulapho kuncane khona.
3. I-laser eqhubekayo (i-laser ye-QCW): Iyindlela yokusebenza ekhethekile phakathi kwama-laser e-continuous wave (CW) nama-laser e-pulsed. Ifinyelela amandla aphezulu asheshayo ngokusebenzisa ama-pulses amade aphindaphindwayo (umjikelezo womsebenzi ngokuvamile ≤1%) ngenkathi igcina amandla aphansi aphakathi nendawo. Ihlanganisa ukuzinza kwama-laser aqhubekayo nenzuzo yamandla aphezulu yama-laser e-pulsed.
Isimiso sobuchwepheshe: Amamojula wokushintshanisa umthwalo we-laser we-QCW ku-continuousi-laserisekethe yokusika ama-laser aqhubekayo abe yizilandelaniso zokujikeleza komjikelezo osebenzayo ophezulu, okufeza ukushintshashintsha okuguquguqukayo phakathi kwezindlela eziqhubekayo nezindlela zokujikeleza. Isici sayo esiyinhloko yindlela "yokuqhuma kwesikhathi esifushane, ukupholisa isikhathi eside". Ukupholisa esikhaleni sokujikeleza kunciphisa ukuqongelela kokushisa futhi kunciphisa ingozi yokuguquguquka kokushisa kwezinto.
Izinzuzo nezici: Ukuhlanganiswa kwemodi ephindwe kabili: Kuhlanganisa amandla aphezulu emodi yokushaya kwenhliziyo (amandla afinyelela ku-10 ajwayelekile emodi eqhubekayo) nokusebenza kahle okuphezulu kanye nokuzinza kwemodi eqhubekayo.
Ukusetshenziswa kwamandla okuphansi: Ukusebenza kahle kokuguqulwa kwe-electro-optical okuphezulu kanye nezindleko eziphansi zokusebenzisa isikhathi eside.
Ikhwalithi yogongolo: Ikhwalithi yogongolo ephezulu yama-laser e-fiber isekela ukusebenza kahle kwe-micro-machining.
Isikhathi sokuthunyelwe: Novemba-10-2025