Yazisaii-laser zefayibha ezityhalwayo
Iilaser ezityhalwayo zeFiber ziizixhobo zelaserezisebenzisa iifayibha ezixutywe nee-ions zomhlaba ezingaqhelekanga (ezifana ne-ytterbium, i-erbium, i-thulium, njl.njl.) njenge-gain medium. Ziquka i-gain medium, i-optical resonant cavity, kunye nomthombo wepompo. Itekhnoloji yayo yokuvelisa i-pulse ibandakanya ikakhulu itekhnoloji ye-Q-switching (inqanaba le-nanosecond), i-active mode-locking (inqanaba le-picosecond), i-passive mode-locking (inqanaba le-femtosecond), kunye netekhnoloji ye-main oscillation power amplification (MOPA).
Izicelo zoshishino ziquka ukusika isinyithi, ukuwelda, ukucoca nge-laser kunye nokusika i-TAB yebhetri ye-lithium kwicandelo elitsha lamandla, kunye namandla okukhupha amandla e-multi-mode afikelela kwinqanaba le-10,000 watts. Kwicandelo le-lidar, ii-laser ze-pulsed ze-1550nm, ezinamandla aphezulu okubetha kunye neempawu zokukhusela amehlo, zisetyenziswa kwiinkqubo ze-radar ezijikelezayo nezifakwe kwizithuthi.
Iintlobo eziphambili zemveliso ziquka uhlobo lwe-Q-switched, uhlobo lwe-MOPA kunye nefayibha enamandla aphezuluiileza ezishukumayoUdidi:
1. I-laser yefayibha etshintshiweyo nge-Q: Umgaqo wokutshintsha kwe-Q kukongeza isixhobo esihlengahlengiswayo ngaphakathi kwe-laser. Kwixesha elininzi, i-laser inokulahleka okukhulu kwaye phantse akukho kukhanya kuphumayo. Kwixesha elifutshane kakhulu, ukunciphisa ukulahleka kwesixhobo kwenza i-laser ikwazi ukuvelisa i-pulse emfutshane enamandla kakhulu. Ii-laser zefayibha ezitshintshiweyo nge-Q zinokufezekiswa nokuba ngokusebenzayo okanye ngokungashukumiyo. Itekhnoloji esebenzayo idla ngokubandakanya ukongeza i-intensive modulator ngaphakathi kwe-cavity ukulawula ukulahleka kwe-laser. Iindlela ezingasebenziyo zisebenzisa ii-saturated absorbers okanye ezinye iziphumo ezingezizo ezi-linear ezifana ne-stimulated Raman scattering kunye ne-stimulated Brillouin scattering ukwenza iindlela ze-Q-modulation. Ii-pulses eziveliswa ngokubanzi ziindlela ze-Q-switching zikwinqanaba le-nanosecond. Ukuba kuza kuveliswa ii-pulses ezimfutshane, zinokufezekiswa ngendlela ye-mode-locking.
2. I-laser yefayibha evaliweyo kwiMode: Ingavelisa iipulse ezimfutshane kakhulu ngokusebenzisa iindlela ze-active mode-locking okanye ze-passive mode-locking. Ngenxa yexesha lokuphendula le-modulator, ububanzi be-pulse obuveliswa yi-active mode-locking buhlala bukwinqanaba le-picosecond. I-Passive mode-locking isebenzisa izixhobo ze-passive mode-locking, ezinexesha elifutshane kakhulu lokuphendula kwaye zinokuvelisa iipulse kwisikali se-femtosecond.
Nantsi intshayelelo emfutshane kumgaqo wokutshixa isikhunta.
Kukho iindlela ezininzi ezinde kwi-laser resonant cavity. Kwi-cavity enemilo yesangqa, i-frequency interval yee-longitudinal modes ilingana ne-/CCL, apho i-C sisantya sokukhanya kwaye i-CL bubude bendlela ye-optical yokukhanya kwesignali okuhamba uhambo olunye olujikelezayo ngaphakathi kwi-cavity. Ngokubanzi, i-gain bandwidth yee-fiber lasers inkulu kakhulu, kwaye inani elikhulu leendlela ezinde zisebenza ngaxeshanye. Inani lilonke leendlela ezinokuthi zifakwe yi-laser lixhomekeke kwi-longitudinal mode interval ∆ν kunye ne-gain bandwidth ye-gain medium. Okukhona i-longitudinal mode interval incinci, kokukhona i-gain bandwidth ye-medium inkulu, kwaye iindlela ezinde zinokuxhaswa. Ngokwahlukileyo koko, zincinci.
3. I-Quasi-continuous laser (i-QCW laser): Yindlela ekhethekileyo yokusebenza phakathi kwe-continuous wave lasers (CW) kunye ne-pulsed lasers. Ifumana amandla aphezulu akhawulezileyo ngokusebenzisa ii-periodic long pulses (umjikelo womsebenzi udla ngokuba yi-≤1%) ngelixa igcina amandla aphakathi aphantsi. Idibanisa uzinzo lwee-continuous lasers kunye nenzuzo yamandla aphezulu e-pulsed lasers.
Umgaqo wobugcisa: Iimodyuli zokulawula umthwalo we-laser ze-QCW kwi-continuousilezaisekethe yokusika ii-laser eziqhubekayo zibe zii-high duty cycle pulse sequences, nto leyo efezekisa utshintsho oluguquguqukayo phakathi kweendlela eziqhubekayo kunye ne-pulse. Isici sayo esiphambili yindlela "yokuqhuma kwexesha elifutshane, ukupholisa ixesha elide". Ukupholisa kwi-pulse gap kunciphisa ukuqokelelana kobushushu kwaye kunciphisa umngcipheko wokuguqulwa kobushushu bezinto.
Iingenelo kunye neempawu: Ukuhlanganiswa kweendlela ezimbini: Kudibanisa amandla aphezulu emowudi ye-pulse (ukuya kuthi ga kwi-10 amandla aphakathi emowudi eqhubekayo) kunye nokusebenza kakuhle kunye nokuzinza kwemowudi eqhubekayo.
Ukusetyenziswa kwamandla aphantsi: Ukusebenza kakuhle kokuguqulwa kwe-electro-optical kunye neendleko eziphantsi zokusetyenziswa kwexesha elide.
Umgangatho we-beam: Umgangatho ophezulu we-fiber lasers uxhasa ukusebenza kakuhle kwe-micro-machining.
Ixesha lokuthumela: Novemba-10-2025