Malunga neMOPA

I-MOPA (i-Master Oscillator Power Amplifier) ​​luyilo lwelaser oluphucula ukusebenza kwemveliso ngokwahlula umthombo wembewu (i-master oscillator) kwinqanaba lokukhulisa amandla. Ingcamango ephambili ibandakanya ukuvelisa isignali ye-seed pulse esemgangathweni ophezulu nge-master oscillator (MO), eya kuthi emva koko inyuswe amandla yi-power amplifier (PA), ekugqibeleni inike ii-laser pulses ezinamandla aphezulu, ezikumgangatho ophezulu, kunye nezilawulwa yiparameter. Olu lwakhiwo lusetyenziswa kakhulu kwi-industrial processing, uphando lwesayensi, kunye nezicelo zonyango.

1.Iingenelo eziphambili ze-MOPA Amplification

①Iiparameter eziGuquguqukayo neziLawulayo:

- Ububanzi bePulse obuLungisekayo ngokuzimeleyo:

Ububanzi be-pulse ye-seed pulse bunokulungiswa ngokuzimeleyo kwinqanaba le-amplifier, ngokuqhelekileyo ukusuka kwi-1 ns ukuya kwi-200 ns.

- Izinga lokuphinda eliLungisekayo:

Ixhasa uluhlu olubanzi lwamazinga okuphindaphinda kwe-pulse, ukusuka kwi-single-shot ukuya kwi-MHz-level high-frequency pulses, ukuhlangabezana neemfuno ezahlukeneyo zokucubungula (umz., ukumakisha ngesantya esiphezulu kunye nokukrola okunzulu).

②Umgangatho weBeam ephezulu:
Iimpawu zembewu ezingenangxolo iphantsi ziyagcinwa emva kokwandiswa, zibonelela ngomgangatho wemitha ephantse idibane (M² < 1.3), efanelekileyo ekuchwethezeni ngokuchanekileyo.

③Amandla aphezulu okubetha kunye nozinzo:
Ngokwandiswa kwamanqanaba amaninzi, amandla e-single-pulse anokufikelela kwinqanaba le-millijoule ngokuguquguquka kwamandla okuncinci (<1%), okulungele ukusetyenziswa kwemizi-mveliso ngocoselelo oluphezulu.

④Ubuchule bokucubungula okubandayo:
Ngobubanzi obufutshane be-pulse (umz., kuluhlu lwe-nanosecond), iziphumo zobushushu kwizixhobo zinokuncitshiswa, okuvumela ukucutshungulwa kakuhle kwezinto ezibuthathaka ezifana neglasi kunye neeseramikhi.

2. I-Oscillator eNkulu (MO):

I-MO ivelisa iipulse zembewu ezinamandla aphantsi kodwa ezilawulwa ngokuchanekileyo. Umthombo wembewu uhlala uyi-laser ye-semiconductor (LD) okanye i-fiber laser, evelisa iipulse nge-direct okanye ngaphandle kwe-modulation.

3.Isandisi-mandla (PA):

I-PA isebenzisa ii-amplifiers zefayibha (ezifana ne-ytterbium-doped fiber, i-YDF) ukukhulisa ii-seed pulses ngamanqanaba amaninzi, okunyusa kakhulu amandla e-pulse kunye namandla aphakathi. Uyilo lwe-amplifier kufuneka luphephe iziphumo ezingezizo ezingqalileyo ezifana ne-stimulated Brillouin scattering (SBS) kunye ne-stimulated Raman scattering (SRS), ngelixa igcina umgangatho ophezulu we-beam.

I-MOPA vs. Ii-Laser zeFiber ze-Q-Switched zeNdabuko