Yazisai-fiber pulsed lasers
IFiber Pulsed lasers ziizixhobo laserabasebenzisa iintsinga ezineeyoni zomhlaba ezinqabileyo (ezifana neytterbium, erbium, thulium, njl.njl.) njengendlela yokuzuza. Ziquka i-gain medium, i-optical resonant cavity, kunye nomthombo wempompo. Itekhnoloji yokuvelisa i-pulse ikakhulu ibandakanya itekhnoloji ye-Q-switching (inqanaba le-nanosecond), ukutshixa imowudi esebenzayo (inqanaba le-picosecond), i-passive mode-locking (inqanaba le-femtosecond), kunye neteknoloji yokukhulisa amandla oscillation (MOPA).
Izicelo zoshishino zigubungela ukusika isinyithi, i-welding, i-laser yokucoca kunye ne-lithium ibhetri ye-TAB yokusika kwintsimi yamandla amatsha, kunye ne-multi-mode output power efikelela kwinqanaba lamawaka alishumi-watt. Kwintsimi ye-lidar, i-1550nm pulsed lasers, kunye ne-high-pulse energy kunye neempawu ezikhuselekileyo zamehlo, zisetyenziswe kwiinkqubo ze-radar ezijikelezayo kunye nezithuthi.
Iindidi eziphambili zeemveliso ziquka uhlobo olutshintshileyo lwe-Q, uhlobo lwe-MOPA kunye nefiber ephezului-pulsed lasers. Udidi:
1. I-laser ye-fiber etshintshiweyo ye-Q: Umgaqo-siseko we-Q-switching kukongeza isixhobo esinokulahlekelwa yilahleko ngaphakathi kwe-laser. Ngamaxesha amaninzi, i-laser inelahleko enkulu kwaye phantse akukho mveliso yokukhanya. Ngexesha elifutshane kakhulu lexesha, ukunciphisa ilahleko yesixhobo kwenza i-laser ikhuphe i-pulse emfutshane kakhulu. Iilaser zefiber ezitshintshiweyo ze-Q zinokufezekiswa ngokusebenzayo okanye ngokungenzi nto. Itekhnoloji esebenzayo ibandakanya ukongeza imodyuli yokuqina ngaphakathi kumngxuma ukulawula ukulahleka kwelaser. Ubuchule bokusingathwa busebenzisa izinto zokufunxa ezihluthayo okanye ezinye iziphumo ezingezizo ezinjengokusasazwa kweRaman kunye nokusasazwa kweBrillouin ukwenza iindlela zokumodareyitha kwe-Q. Iipulses ngokubanzi ezenziwe ngeendlela ze-Q-switching zikwinqanaba le-nanosecond. Ukuba ii-pulses ezimfutshane ziza kuveliswa, zinokufezekiswa ngendlela yokutshixa indlela.
2. I-fiber laser ye-Mode-lock: Iyakwazi ukuvelisa i-ultrashort pulses ngokusebenzisa i-mode-locking esebenzayo okanye iindlela zokuvala i-mode-locking. Ngenxa yexesha lokuphendula lemodyuli, ububanzi be-pulse obuveliswa yi-mode-locking esebenzayo ngokuqhelekileyo kwinqanaba le-piccosecond. Ukutshixa imowudi yePassive isebenzisa izixhobo zokutshixa zemowudi, ezinexesha elifutshane lokuphendula kwaye zinokuvelisa iipulses kwisikali se-femtosecond.
Nantsi intshayelelo emfutshane yomgaqo wokutshixa ngundo.
Kukho iindlela ezingenakubalwa ze-longitudinal kwi-laser resonant cavity. Kwindawo emile okwesangqa, ikhefu lekhefu leendlela zobude bulingana ne/CCL, apho i-C isantya sokukhanya kunye ne-CL ubude bendlela yokukhanya kwesiginali ehamba uhambo olunye olujikelezayo ngaphakathi kwendawo. Ngokubanzi, ukufumana i-bandwidth ye-fiber lasers inkulu, kwaye inani elikhulu leendlela ze-longitudinal zisebenza ngaxeshanye. Inani lilonke leendlela ezinokuthi i-laser ikwazi ukuzifaka kuxhomekeke kwisithuba semowudi yobude ∆ν kunye ne-gain bandwidth ye- gain medium. Incinci isithuba semowudi ye-longitudinal, inkulu i-bandwidth yokufumana i-medium, kunye neendlela ezininzi ze-longitudinal ezinokuxhaswa. Ngokuchaseneyo, ngaphantsi.
3. I-laser ye-quasi-continuous laser (QCW laser) : Yindlela ekhethekileyo yokusebenza phakathi kwe-laser wave wave (CW) kunye ne-pulsed lasers. Ifikelela kwimveliso yamandla ekhawulezileyo ephezulu ngokubetha kwamaxesha amade (umjikelo womsebenzi ngokuqhelekileyo ≤1%) ngelixa igcina amandla omndilili osezantsi noko. Idibanisa ukuzinza kwee-lasers eziqhubekayo kunye ne-peak power advantage of pulsed lasers.
Umgaqo wobugcisa: I-laser ye-QCW ilayisha iimodyuli zokumodareyitha ngokuqhubekayolaserisekethe ukusika i-lasers eqhubekayo ibe yi-high duty cycle sequences ye-pulse, ukuphumeza ukutshintshwa okuguquguqukayo phakathi kweendlela eziqhubekayo kunye ne-pulse. Olona phawu lwayo lusebenza "ngokuqhuma kwexesha elifutshane, ukupholisa ixesha elide". Ukupholisa kwi-gap ye-pulse kunciphisa ukuqokelelwa kobushushu kwaye kunciphisa umngcipheko we-thermal deformation.
Izinto eziluncedo kunye neempawu: Ukuhlanganiswa kweendlela ezimbini: Idibanisa amandla aphezulu emowudi ye-pulse (ukuya kumaxesha angama-10 amandla aphakathi kwemodi eqhubekayo) kunye nokusebenza okuphezulu kunye nokuzinza kwemodi eqhubekayo. i
Ukusetyenziswa kwamandla aphantsi: Ukusebenza kakuhle kokuguqulwa kwe-electro-optical kunye neendleko eziphantsi zokusetyenziswa kwexesha elide. i
Umgangatho we-Beam: Umgangatho ophezulu we-beam we-fiber lasers uxhasa ukucwangciswa kwe-micro-machining.
Ixesha lokuposa: Nov-10-2025