MOPA (Master Oscillator Power Amplifier) bụ ihe owuwu laser nke na-eme ka arụmọrụ mmepụta ya dịkwuo mma site na ikewapụta isi mkpụrụ (nna ukwu oscillator) na ọkwa nkwalite ike. Echiche bụ isi na-agụnye ịmepụta akara mkpụrụ osisi dị elu na nna ukwu oscillator (MO), nke a na-eme ka ike ya dịkwuo elu site na ike amplifier (PA), n'ikpeazụ na-ebuga ike dị elu, ịdị elu-beam-edu, na parameter-controllable laser pulses. A na-eji ihe owuwu a eme ihe na nhazi ụlọ ọrụ mmepụta ihe, nyocha sayensị, na ngwa ahụike.
1.Uru ndị bụ isi nke MOPA Amplification
①Usoro ndị na-agbanwe agbanwe na nke enwere ike ịchịkwa:
- obosara Pulse na-edozi onwe ya:
Enwere ike idozi obosara nke mkpụrụ akụ mkpụrụ ahụ n'adabereghị na ọkwa amplifier, na-adịkarị site na 1 ns ruo 200 ns.
- Ọnụego mmeghari na-agbanwe agbanwe:
Na-akwado ọnụ ọgụgụ dị iche iche nke nkwugharị pulse, site na otu-shot ruo MHz-ọkwa dị elu ugboro ugboro, iji gboo mkpa nhazi dị iche iche (dịka ọmụmaatụ, akara ọsọ ọsọ na ihe osise miri emi).
②Ogo ọkụ dị elu:
A na-edobe àgwà mkpọtụ dị ala nke isi iyi mkpụrụ ahụ mgbe ọ gbasasịrị, na-ebuga ịdị mma beam dị nso-iche dị oke (M² <1.3), dabara adaba maka ịrụ ọrụ nkenke.
③Ike Pulse dị elu na nkwụsi ike:
Site na mmụba dị iche iche, ike otu-pulse nwere ike iru ọkwa millijoule na obere mgbanwe ume ike (<1%), dị mma maka ngwa mmepụta ihe dị elu.
④Ike nhazi oyi:
Site na obosara usu dị mkpụmkpụ (dịka ọmụmaatụ, na oke nanosecond), enwere ike ibelata mmetụta ọkụ na ihe, na-eme ka nhazi nke ọma nke ihe ndị na-emebi emebi dị ka iko na seramiki.
2. Nna-ukwu Oscillator (MO):
MO na-ewepụta mkpụrụ osisi a na-achịkwa nke ọma. Isi mmalite mkpụrụ bụ laser semiconductor (LD) ma ọ bụ laser fiber, na-emepụta pulses site na ngbanwe ozugbo ma ọ bụ mpụga.
3.Ike Amplifier (PA):
The PA na-eji eriri amplifiers (dị ka ytterbium-doped fiber, YDF) na-ebuli mkpụrụ mkpụrụ n'ọtụtụ nkebi, budata na-akwalite pulse ume na nkezi ike. Nhazi amplifier ga-ezere mmetụta ndị na-adịghị ahụ anya dị ka mkpali agbasa Brillouin (SBS) na ịkpali mgbasa ozi Raman (SRS), ebe ọ na-ejigide ịdị mma beam.
MOPA vs. Omenala Q-Switched Fiber Lasers
| Njirimara | Ọdịdị MOPA | Lasers Q-gbanwere ọdịnala |
| Ndozi obosara Pulse | Enwere ike ịhazigharị onwe ya (1-500 ns) | Edobere (dabere na Q-switch, ọ na-abụkarị 50-200 ns) |
| Ọnụego ikwugharị | Enwere ike ịhazigharị nke ọma (1 kHz–2 MHz) | Ogologo ma ọ bụ dị warara |
| Mgbanwe | Ihe dị elu (n'usoro ihe omume) | Dị ala |
| Ihe ngosi ngwa | Nrụpụta nke ọma, akara ọnụọgụ dị elu, nhazi ihe pụrụ iche | Mbelata n'ozuzu, akara |
Oge nzipu: Mee-15-2025