Ku bijyanye na MOPA

MOPA (Master Oscillator Power Amplifier) ​​ni imiterere ya laser yongera umusaruro binyuze mu gutandukanya isoko ry'imbuto (master oscillator) n'urwego rwo kongera imbaraga. Igitekerezo cy'ingenzi kigamije gukora ikimenyetso cy'impuzandengo y'imbuto nziza hamwe na master oscillator (MO), hanyuma ikongera ingufu hakoreshejwe power amplifier (PA), amaherezo igatanga impuzandengo za laser zifite imbaraga nyinshi, ubuziranenge bwo hejuru, kandi zishobora kugenzurwa n'ibipimo. Ubu buryo bukoreshwa cyane mu gutunganya inganda, ubushakashatsi bwa siyansi, no mu buvuzi.

1.Ibyiza by'ingenzi byo kongera ingufu za MOPA

①Ibipimo byoroshye kandi bishobora kugenzurwa:

- Ubugari bw'ingufu zihinduka ku buryo bwigenga:

Ubugari bw'impeshyi y'umuvuduko w'imbuto bushobora guhindurwa hatitawe ku cyiciro cya amplifier, ubusanzwe buri hagati ya 1 ns na 200 ns.

- Igipimo cyo gusubiramo gishobora guhindurwa:

Ishyigikira uburyo butandukanye bwo gusubiramo amajwi, kuva kuri pulse imwe kugeza kuri MHz, kugira ngo ihuze n'ibikenewe mu gutunganya amajwi (urugero: gushyira ikimenyetso ku muvuduko mwinshi no gushushanya mu buryo bwimbitse).

②Ubwiza bwo hejuru bw'umurabyo:
Imiterere y'urusaku ruto rw'imbuto igumana nyuma yo kongera imbaraga, itanga ubwiza bw'urumuri rudakwirakwira cyane (M² < 1.3), rukwiriye gukoreshwa mu gutunganya neza.

③Ingufu nyinshi zo gutera no guhagarara neza:
Iyo ingufu ziyongera mu byiciro byinshi, ingufu zikoreshwa mu gutera umuvuduko umwe zishobora kugera ku rwego rwa mililijoule hamwe n’ihindagurika rito ry’ingufu (<1%), bikaba ari byiza cyane mu nganda zikora neza cyane.

④Ubushobozi bwo gutunganya ibintu mu buryo bukonje:
Iyo ubugari bw'imitsi bugufi (urugero, mu gice cya nanosecond), ingaruka z'ubushyuhe ku bikoresho zishobora kugabanuka, bigatuma ibikoresho byoroshye gukora nk'ibirahure na ceramic bitunganywa neza.

2. Igikoresho cy'Ubwenge cya Oscillator (MO):

MO ikora imbuto zitanga ingufu nke ariko zigenzurwa neza. Isoko y'imbuto ubusanzwe ni laser ya semiconductor (LD) cyangwa laser ya fiber, ikora impumuro binyuze mu buryo butaziguye cyangwa bwo hanze.

3.Amplifikateri y'amashanyarazi (PA):

PA ikoresha amplifiers za fibre (nk'umugozi wa ytterbium, YDF) kugira ngo yongere imbaraga z'imbuto mu byiciro byinshi, yongera imbaraga z'impuzandengo n'imbaraga zisanzwe. Igishushanyo mbonera cya amplifiers kigomba kwirinda ingaruka zitari umurongo umwe nka stimulated Brillouin scattering (SBS) na stimulated Raman scattering (SRS), mu gihe igumana ubwiza bwo hejuru bw'imirasire.

MOPA ugereranije na Q-Switched Fiber Laser gakondo