MOPA (Master Oscillator Power Amplifier) ni laser yubatswe yongerera umusaruro umusaruro utandukanya imbuto (master oscillator) nicyiciro cyo kongera ingufu. Igitekerezo cyibanze gikubiyemo kubyara imbuto nziza yo mu rwego rwo hejuru hamwe na master oscillator (MO), hanyuma igahita yongerwamo ingufu na amplifier power (PA), amaherezo igatanga imbaraga nyinshi, zifite ubuziranenge-bwiza, hamwe na laser-pulses. Ubu bwubatsi bukoreshwa cyane mugutunganya inganda, ubushakashatsi bwa siyanse, hamwe nubuvuzi.
1.Inyungu zingenzi za Amplification ya MOPA
①Ibipimo byoroshye kandi bigenzurwa:
- Kwigenga Guhindura Ubugari bwa Pulse:
Ubugari bwimisemburo yimbuto irashobora guhindurwa bitagendeye kumyanya ya amplifier, mubisanzwe kuva kuri 1 ns kugeza 200 ns.
- Igipimo cyo Gusubiramo Igipimo:
Shyigikira urwego runini rwibisubirwamo, kuva kurasa rimwe kugeza kuri MHz-urwego rwinshi-rwinshi rwa pulses, kugirango uhuze ibikenewe gutunganywa bitandukanye (urugero, ikimenyetso cyihuta no gushushanya byimbitse).
②Ubwiza buhanitse:
Urusaku ruke ruranga inkomoko yimbuto rugumaho nyuma yo kwongerwaho imbaraga, rugatanga hafi-itandukanijwe-ntarengwa ryibiti (M² <1.3), bikwiriye gutunganywa neza.
③Ingufu Zinshi Zifata kandi zihamye:
Hamwe nibyiciro byinshi byongera imbaraga, ingufu-imwe imwe irashobora kugera kurwego rwa milijoule hamwe nihindagurika rito ryingufu (<1%), nibyiza kubikorwa byinganda zisobanutse neza.
④Ubushobozi bwo gutunganya ubukonje:
Hamwe n'ubugari buke bwa pulse (urugero, murwego rwa nanosekond), ingaruka zumuriro kubikoresho zirashobora kugabanuka, bigafasha gutunganya neza ibikoresho byoroshye nkibirahure na ceramika.
2. Umwigisha Oscillator (MO):
MO itanga imbaraga nkeya ariko igenzurwa neza nimbuto. Inkomoko yimbuto mubisanzwe ni laser semiconductor (LD) cyangwa fibre fibre, itanga impiswi binyuze muburyo butaziguye cyangwa bwo hanze.
3.Amashanyarazi (PA):
PA ikoresha fibre amplifiers (nka fibre ytterbium-Doped fibre, YDF) kugirango yongere imbuto zimbuto mubyiciro byinshi, izamura cyane imbaraga zimpanuka nimbaraga zisanzwe. Igishushanyo mbonera kigomba kwirinda ingaruka zidafite umurongo nko gukwirakwizwa kwa Brillouin (SBS) no gukangurira Raman gutatanya (SRS), mugihe hagumyeho ubwiza buhanitse.
MOPA na Gakondo Q-Yahinduwe Fibre Laser
| Ikiranga | Imiterere ya MOPA | Gakondo Q-Yahinduwe |
| Guhindura Ubugari bwa Pulse | Birashobora guhinduka (1-500 ns) | Bimaze gukosorwa (biterwa na Q-switch, mubisanzwe 50–200 ns) |
| Igipimo cyo Gusubiramo | Birashobora guhinduka cyane (1 kHz - 2 MHz) | Urwego ruhamye cyangwa rugufi |
| Guhinduka | Hejuru (ibipimo bishobora gutegurwa) | Hasi |
| Gusaba | Gutunganya neza, kuranga-inshuro nyinshi, gutunganya ibikoresho bidasanzwe | Gukata muri rusange |
Igihe cyo kohereza: Gicurasi-15-2025