Za MOPA

MOPA (Master Oscillator Power Amplifier) ​​ndi kamangidwe ka laser komwe kamathandizira magwiridwe antchito polekanitsa gwero la mbewu (master oscillator) kuchokera pagawo lokulitsa mphamvu. Lingaliro lofunika kwambiri limaphatikizapo kupanga chizindikiro chamtundu wapamwamba kwambiri wa mbewu ndi master oscillator (MO), yomwe kenako imakulitsidwa mphamvu ndi amplifier yamagetsi (PA), pamapeto pake imatulutsa mphamvu zamphamvu, zamtengo wapatali, komanso ma laser pulses. Zomangamangazi zimagwiritsidwa ntchito kwambiri pakukonza mafakitale, kafukufuku wasayansi, ndi ntchito zamankhwala.

1.Ubwino waukulu wa MOPA Amplification

①Zosintha komanso zowongolera:

- Kutalika kwa Pulse Width:

M'lifupi mwake kugunda kwa mbewu kumatha kusinthidwa mosatengera gawo la amplifier, nthawi zambiri kuyambira 1 ns mpaka 200 ns.

- Mlingo Wobwerezabwereza Wosinthika:

Imathandizira kubwereza kwa kugunda kwamtundu wambiri, kuchokera pakuwombera kamodzi mpaka MHz-level high-frequency pulses, kuti ikwaniritse zosowa zosiyanasiyana zokonzekera (mwachitsanzo, kuyika chizindikiro ndi zolemba zakuya).

②Ubwino Wapamwamba wa Beam:
Makhalidwe a phokoso otsika a gwero la mbeu amasungidwa pambuyo pa kukulitsa, kuperekera mtengo wamtengo wapatali wa pafupi-diffraction-ochepa (M² <1.3), woyenerera makina olondola.

③High Pulse Energy ndi Kukhazikika:
Ndi kukulitsa masitepe ambiri, mphamvu imodzi yokha imatha kufika pamlingo wa millijoule ndi kusinthasintha kochepa kwa mphamvu (<1%), yabwino kwa mafakitale apamwamba kwambiri.

④Cold Processing Kutha:
Ndi kugunda kwafupipafupi (mwachitsanzo, mumtundu wa nanosecond), kutentha kwazinthu kumatha kuchepetsedwa, zomwe zimathandiza kukonza bwino zinthu zowonongeka monga galasi ndi zoumba.

2. Master Oscillator (MO):

MO imapanga mphamvu zochepa koma zoyendetsedwa bwino ndi mbeu. Gwero la mbewu nthawi zambiri ndi semiconductor laser (LD) kapena fiber laser, yomwe imapanga ma pulse kudzera mwachindunji kapena kunja.

3.Power Amplifier (PA):

PA imagwiritsa ntchito ma fiber amplifiers (monga ytterbium-doped fiber, YDF) kukulitsa ma pulse ambewu mu magawo angapo, kukulitsa mphamvu yakugunda komanso mphamvu yapakati. Kapangidwe ka amplifier kuyenera kupewa zotsatira zopanda mzere monga stimulated Brillouin scattering (SBS) ndi stimulated Raman scattering (SRS), ndikusunga mtengo wapamwamba kwambiri.

MOPA vs. Traditional Q-Switched Fiber Lasers