Game da MOPA

MOPA (Master Oscillator Power Amplifier) ​​wani tsari ne na laser wanda ke haɓaka aikin fitarwa ta hanyar raba tushen iri (master oscillator) daga matakin ƙara ƙarfin lantarki. Babban ra'ayin ya ƙunshi samar da siginar bugun iri mai inganci tare da babban oscillator (MO), wanda daga nan sai amplifier mai ƙarfi (PA) ya ƙara ƙarfin kuzari, a ƙarshe yana isar da babban ƙarfin, inganci mai ƙarfi, da kuma ƙarfin laser mai sarrafawa. Ana amfani da wannan tsarin sosai a cikin sarrafa masana'antu, binciken kimiyya, da aikace-aikacen likita.

1.Manyan Fa'idodi na Ƙara MOPA

①Sigogi masu sassauƙa da kuma masu sarrafawa:

- Faɗin bugun jini mai daidaitawa kai tsaye:

Ana iya daidaita faɗin bugun zuciya na bugun iri ba tare da la'akari da matakin amplifier ba, yawanci yana farawa daga 1 ns zuwa 200 ns.

- Daidaitawar Saurin Maimaitawa:

Yana goyan bayan nau'ikan bugun bugun iri-iri, daga bugun sau ɗaya zuwa bugun mita mai yawa na matakin MHz, don biyan buƙatun sarrafawa daban-daban (misali, alamar sauri da sassaka mai zurfi).

②Ingancin Haske Mai Kyau:
Ana kiyaye ƙarancin hayaniya na tushen iri bayan ƙara girma, wanda ke samar da ingancin hasken da ke kusa da diffraction (M² < 1.3), wanda ya dace da injin sarrafa daidai.

③Babban Makamashi da Kwanciyar Hankali:
Tare da ƙara yawan matakai, kuzarin bugun jini ɗaya zai iya kaiwa matakin millijoule tare da ƙarancin canjin kuzari (<1%), wanda ya dace da aikace-aikacen masana'antu masu inganci.

④Ƙarfin Sarrafa Sanyi:
Da ɗan gajeren faɗin bugun jini (misali, a cikin kewayon nanosecond), ana iya rage tasirin zafi akan kayan, wanda ke ba da damar sarrafa kayan da suka lalace kamar gilashi da yumbu.

2. Babban Oscillator (MO):

MO yana samar da ƙananan ƙarfin iri amma wanda aka sarrafa shi daidai. Tushen iri yawanci shine laser semiconductor (LD) ko laser fiber, yana samar da bugun jini ta hanyar daidaitawa kai tsaye ko waje.

3.Ƙaramin Ƙarfi (PA):

PA yana amfani da na'urorin ƙara ƙarfin zare (kamar ytterbium-doped fiber, YDF) don ƙara ƙarfin zurfin iri a matakai da yawa, wanda hakan ke ƙara ƙarfin bugun jini da matsakaicin ƙarfi. Tsarin ƙara ƙarfin dole ne ya guji tasirin da ba na layi ba kamar su watsawar Brillouin (SBS) da watsawar Raman (SRS), yayin da yake kiyaye ingancin hasken.

MOPA da Lasers ɗin Fiber Mai Sauyawar Q-Traditional