Ku saabsan MOPA

MOPA (Master Oscillator Power Amplifier) ​​waa qaab dhismeedka laysarka kaas oo kor u qaada waxqabadka wax soo saarka iyada oo la kala saarayo isha abuurka (master oscillator) iyo heerka kor u qaadida awooda. Fikradda udub-dhexaadka ah waxay ku lug leedahay abuurista calaamad tayo sare leh oo abuur ah oo leh oscillator Master (MO), kaas oo markaa tamar lagu xoojiyey cod-weyneeye (PA), ugu dambeyntii bixinta awood sare, tayo sare oo tayo sare leh, iyo garaaca wadnaha-lambarka-xakamaynta. Nashqadan waxa si weyn loogu isticmaalaa habaynta warshadaha, cilmi baadhista sayniska, iyo codsiyada caafimaadka.

1.Faa'iidooyinka ugu muhiimsan ee MOPA Amplification

①Halbeegyada dabacsan oo la xakameyn karo:

- Balaadhka garaaca wadnaha oo si madaxbanaan loo hagaajin karo:

Ballaca garaaca garaaca abuurka waxaa loo hagaajin karaa si ka madax bannaan heerka cod-weyneeye, sida caadiga ah u dhexeeya 1 ns ilaa 200 ns.

- Heerka soo noqnoqda ee la hagaajin karo:

Waxay taageertaa heerar kala duwan oo ah celceliska garaaca garaaca garaaca wadnaha ilaa heerka MHz, si loo daboolo baahiyaha habaynta ee kala duwan (tusaale, calaamadaynta xawaaraha sare iyo xaradhka qoto dheer).

②Tayada Beam Sare:
Sifooyinka sanqadha hoose ee isha abuurka ayaa la ilaaliyaa ka dib kordhinta, bixinta tayada iftiinka xaddidan ee ku dhow-kala duwanaansho (M² <1.3), oo ku habboon farsamaynta saxda ah.

③Tamarta Wadnaha Sare iyo Deganaanshaha:
Kordhinta heerar kala duwan, tamarta hal garaaca wadnaha ah waxay gaari kartaa heerka millijoule oo leh isbedbeddelka tamarta ugu yar (<1%), oo ku habboon codsiyada warshadaha ee saxda ah.

④Awooda Habaynta Qabow:
Balaadhka garaaca garaaca wadnaha oo gaaban (tusaale, kala duwanaanshaha nanosecond), saamaynta kulaylka ee agabka waa la yareeyn karaa, taasoo awood u siinaysa habayn fiican ee walxaha jajaban sida dhalooyinka iyo dhoobada.

2. Master Oscillator (MO):

MO waxay soo saartaa tamarta yar laakiin si sax ah loo kontoroolo abuurka abuurka. Isha abuurka ayaa caadi ahaan ah laser semiconductor (LD) ama laser fiber, oo soo saara garaacis iyada oo loo marayo qaabaynta tooska ah ama dibadda.

3.Cod-weyneeye (PA):

PA waxay isticmaashaa amplifiers fiber-ka (sida ytterbium-doped fiber, YDF) si ay u xoojiso abuurka abuurka marxalado badan, taasoo si weyn kor ugu qaadaysa tamarta garaaca wadnaha iyo celceliska awooda. Naqshadaynta cod-weyneeye waa in ay ka fogaato saamaynta aan tooska ahayn sida kicinta Brillouin firdhinta (SBS) iyo kicinta Raman firdhinta (SRS), iyada oo la ilaalinayo tayada sare ee iftiinka.

MOPA vs. Fiber Lasers-dhaqameedka Q-Switched