Imbaraga-nini cyane ya laser hamwe na fibre yose ya MOPA

Lazeri ifite imbaraga nyinshihamwe na fibre yose ya MOPA imiterere

Ubwoko bwibanze bwububiko bwa fibre laseri harimo resonator imwe, guhuza ibiti hamwe na master oscillating power amplifier (MOPA). Muri byo, imiterere ya MOPA yabaye imwe mu mashyanyarazi agezweho kubera ubushobozi bwayo bwo kugera ku bikorwa byizalaserIbisohoka hamwe nubugari bwimikorere ihindagurika hamwe ninshuro zisubiramo (byitwa ubugari bwa pulse ninshuro zisubiramo).

Ihame ryakazi rya laser ya MOPA nuburyo bukurikira: Oscillator nyamukuru (MO) nisoko yimbuto ikora cyanesemiconductor laseribyara imbuto yerekana ibimenyetso byurumuri hamwe nibishobora guhinduka binyuze muburyo butaziguye. Irembo rya Field Programmable gate Array (FPGA) igenzura nyamukuru risohora ibimenyetso bya pulse bigezweho hamwe nibipimo bishobora guhinduka, bigenzurwa numuzunguruko wa moteri kugirango ukore isoko yimbuto kandi urangize ihinduka ryambere ryurumuri rwimbuto. Nyuma yo kwakira amabwiriza yo kugenzura kuva kubuyobozi bukuru bwa FPGA, umuzenguruko wa pompe utangiza isoko ya pompe kugirango ubyare urumuri rwa pompe. Nyuma yumucyo wimbuto nu rumuri rwa pompe bihujwe no gutandukanya ibiti, byinjizwa muri Yb3 + -yikubye kabiri fibre optique (YDDCF) mubyiciro bibiri bya optique amplification module. Muri iki gikorwa, Yb3 + ion ikurura ingufu zumucyo wa pompe kugirango ikwirakwize abaturage. Ibikurikira, hashingiwe ku mahame yo gutembera kwingendo no gukwirakwiza ibyuka bihumanya ikirere, urumuri rwibimenyetso rwimbuto rugera ku mbaraga nyinshi mubyiciro bibiri bya optique amplification module, amaherezo ikabyara imbaraga nyinshinanosekond pulsed laser. Bitewe no kwiyongera kwingufu zimpinga, ibimenyetso byongerewe imbaraga birashobora guhura nubugari bwimpanuka kubera inyungu zifatika. Mubikorwa bifatika, ibyiciro byinshi byongerwaho imbaraga akenshi bifatwa kugirango turusheho kongera ingufu zisohoka no kunguka neza.

Sisitemu ya laser ya MOPA igizwe nubuyobozi bukuru bwa FPGA, isoko ya pompe, isoko yimbuto, ikibaho cyumushoferi wumushoferi, amplifier, nibindi. Ubuyobozi bukuru bwa FPGA butwara isoko yimbuto kugirango isohore imbuto ya MW mbuto mbuto yumucyo hamwe nibipimo bishobora guhinduka mugutanga ibimenyetso byamashanyarazi byumuvuduko ukabije, ubugari bwimpanuka (5 kugeza 200kHz). Iki kimenyetso cyinjizwa binyuze mu bwigunge kugeza ku byiciro bibiri bya optique amplification module igizwe na preamplifier hamwe na amplifier nyamukuru, hanyuma amaherezo igasohora ingufu nyinshi-ngufi-pulse laser binyuze muri optique ya optique hamwe nibikorwa byo gukusanya. Inkomoko yimbuto ifite ibikoresho bifotora imbere kugirango ikurikirane ingufu zisohoka mugihe nyacyo kandi uyisubize mubuyobozi bukuru bwa FPGA. Ubuyobozi bukuru bugenzura imiyoboro ya pompe ya 1 na 2 kugirango igere kubikorwa byo gufungura no gufunga amasoko ya pompe 1, 2 na 3. Iyogufotorayananiwe gutahura ibimenyetso byerekana urumuri rusohoka, ubuyobozi bukuru buzahagarika isoko ya pompe kugirango birinde kwangirika kwa YDDCF nibikoresho bya optique kubera kubura urumuri rwimbuto

Sisitemu ya MOPA laser optique yinzira ya fibre yuburyo bwose kandi igizwe na module nyamukuru yo kunyeganyega hamwe na module ebyiri zo kongera imbaraga. Module nyamukuru yo kunyeganyega ifata semiconductor laser diode (LD) hamwe nuburebure bwo hagati bwa 1064nm, umurongo wa 3nm, hamwe nimbaraga nyinshi zisohoka zingana na 400mW nkisoko yimbuto, kandi ikabihuza na fibre Bragg grating (FBG) hamwe nuburinganire bwa 99 %@1063.94nm hamwe numurongo wa 3.5nm. Icyiciro cya 2 amplification module ifata igishushanyo mbonera cya pompe, kandi YDDCF ifite diametero yibanze ya 8 na 30μm zashyizweho nkinyungu zamakuru. Coefficient ya pompe ikwiranye ni 1.0 na 2.1dB/m@915nm.