MOPA (Master Oscillator Power Amplifier) yog ib lub laser architecture uas ua kom cov zis ua haujlwm zoo dua los ntawm kev cais cov noob qhov chaw (master oscillator) ntawm theem fais fab amplification. Lub tswv yim tseem ceeb yog tsim kom muaj lub teeb liab zoo nrog tus tswv oscillator (MO), uas tom qab ntawd lub zog-amplifier (PA) amplifier, thaum kawg xa cov laser pulses muaj zog, zoo beam, thiab parameter-controllable. Cov qauv no yog siv dav hauv kev ua lag luam, kev tshawb fawb, thiab kev siv kho mob.
1.Cov txiaj ntsig tseem ceeb ntawm MOPA Amplification
①Cov Kev Ntsuas Yooj Yim thiab Tswj Tau:
- Qhov Dav Dav Hloov Kho Tau Ywj Pheej:
Qhov dav ntawm lub pulse ntawm noob pulse tuaj yeem hloov kho tau ywj pheej ntawm theem amplifier, feem ntau yog li ntawm 1 ns txog 200 ns.
- Tus Nqi Rov Ua Dua Kho Tau:
Txhawb nqa ntau yam kev rov ua dua ntawm cov pulse, los ntawm ib zaug txhaj mus rau MHz-qib high-frequency pulses, kom ua tau raws li ntau yam kev xav tau ua tiav (piv txwv li, kev cim ceev ceev thiab kev kos duab tob).
②Kev Zoo Siab ntawm Lub Teeb:
Cov yam ntxwv qis suab nrov ntawm cov noob qoob loo tau khaws cia tom qab amplification, xa cov beam zoo ze-diffraction-txwv (M² < 1.3), tsim nyog rau kev ua haujlwm precision.
③Lub zog siab thiab kev ruaj khov:
Nrog ntau theem amplification, ib-pulse zog tuaj yeem ncav cuag theem millijoule nrog qhov kev hloov pauv zog tsawg kawg nkaus (<1%), zoo tagnrho rau kev siv hauv kev lag luam siab.
④Kev Muaj Peev Xwm Ua Txias:
Nrog rau qhov dav ntawm lub zog luv luv (piv txwv li, hauv qhov ntau ntawm nanosecond), cov teebmeem thermal ntawm cov ntaub ntawv tuaj yeem txo qis, ua rau kev ua cov khoom siv brittle xws li iav thiab ceramics zoo.
2. Tus Oscillator Tswv Yim (MO):
Lub MO tsim cov noob pulses uas muaj zog tsawg tab sis tswj tau meej. Lub hauv paus noob feem ntau yog lub semiconductor laser (LD) lossis fiber laser, tsim cov pulses ntawm kev hloov kho ncaj qha lossis sab nraud.
3.Lub Tshuab Nqus Fais Fab (PA):
Lub PA siv cov fiber amplifiers (xws li ytterbium-doped fiber, YDF) los ua kom cov noob pulses loj dua hauv ntau theem, ua rau lub zog pulse thiab lub zog nruab nrab zoo dua. Kev tsim cov amplifier yuav tsum zam cov teebmeem nonlinear xws li stimulated Brillouin scattering (SBS) thiab stimulated Raman scattering (SRS), thaum tswj hwm qhov zoo ntawm lub teeb.
MOPA vs. Cov Lasers Q-Switched Fiber Ib Txwm Muaj
| Feature | Cov Qauv MOPA | Cov Lasers Q-Switched Ib Txwm Muaj |
| Kev Kho Qhov Dav Ntawm Lub Plawv | Kho tau ywj pheej (1–500 ns) | Ruaj khov (nyob ntawm Q-switch, feem ntau 50–200 ns) |
| Tus Nqi Rov Ua Dua | Kho tau dav dav (1 kHz–2 MHz) | Ntau yam ruaj khov los yog nqaim |
| Kev ywj pheej | Siab (cov kev teeb tsa programmable) | Qis |
| Cov Xwm Txheej ntawm Daim Ntawv Thov | Kev ua haujlwm zoo, kev cim ntau zaus, kev ua cov khoom tshwj xeeb | Kev txiav dav dav, cim |
Lub sijhawm tshaj tawm: Tsib Hlis-15-2025