MOPA (Master Oscillator Power Amplifier) bụ usoro laser nke na-eme ka arụmọrụ mmepụta dịkwuo mma site na ikewapụ isi iyi mkpụrụ (master oscillator) na ọkwa mmụba ike. Isi echiche ya gụnyere imepụta akara mkpali mkpụrụ dị elu yana oscillator master (MO), nke a na-eme ka ike dịkwuo elu site na amplifier ike (PA), na-eweta ike dị elu, na-enye ike dị elu, mma-beam, na paramita nke a na-achịkwa. A na-eji usoro a eme ihe nke ukwuu na nhazi ụlọ ọrụ mmepụta ihe, nyocha sayensị, na ngwa ahụike.
1.Uru Dị Mkpa nke Mgbakwunye MOPA
①Usoro Mgbanwe na Nchịkwa:
- Obosara Pulse nke a na-agbanwe n'onwe ya:
Enwere ike ịgbanwe obosara mkpali mkpụrụ ahụ n'adabereghị na ọkwa amplifier, nke na-abụkarị site na 1 ns ruo 200 ns.
- Ọnụego ugboro ugboro a na-agbanwe agbanwe:
Na-akwado ọtụtụ ọnụego mmegharị mkpali, site na otu-ose ruo MHz-ọkwa elu-ugboro ugboro, iji mezuo mkpa nhazi dị iche iche (dịka ọmụmaatụ, akara ọsọ dị elu na ịkpụcha miri emi).
②Ogo Ọkụ Dị Elu:
A na-ejigide njirimara obere mkpọtụ nke isi iyi mkpụrụ mgbe emechara mmụba ya, na-enye ogo osisi dị nso na diffraction (M² < 1.3), nke dabara adaba maka nhazi ziri ezi.
③Ike na nkwụsi ike dị elu nke Pulse:
Site na mmụba dị iche iche, ike otu-pulse nwere ike iru ọkwa millijoule na obere mgbanwe ike (<1%), nke zuru oke maka ngwa ụlọ ọrụ mmepụta ihe dị oke mma.
④Ike Nhazi Oyi:
Site na obere obosara mkpali (dịka ọmụmaatụ, na oke nanosecond), enwere ike ibelata mmetụta okpomọkụ na ihe, na-eme ka nhazi dị mma nke ihe ndị na-emebi emebi dị ka iko na seramiiki.
2. Ọkpụkpọ Oscillator Ukwu (MO):
MO na-emepụta mkpụrụ osisi nwere ike dị ala mana nke a na-achịkwa nke ọma. Isi mmalite mkpụrụ osisi ahụ na-abụkarị laser semiconductor (LD) ma ọ bụ laser fiber, na-emepụta mkpụrụ osisi site na modulation kpọmkwem ma ọ bụ mpụga.
3.Ihe na-eme ka ike dịkwuo elu (PA):
PA na-eji ihe ndị na-eme ka eriri dịkwuo elu (dịka eriri ytterbium-doped, YDF) iji mee ka mkpụrụ osisi dịkwuo elu n'ọtụtụ ọkwa, na-eme ka ike mkpali na ike nkezi dịkwuo elu. Nhazi ihe na-eme ka amplifier ghara inwe mmetụta ndị na-abụghị ahịrị dịka Brillouin scattering (SBS) na Raman scattering (SRS) dị ike, ma na-ejigide ịdị mma nke osisi ahụ.
MOPA vs. Omenala Q-Switched fiber lasers
| atụmatụ | Ọdịdị MOPA | Laser Q-Switched nke ọdịnala |
| Mgbanwe Obosara Pulse | Nhazi nke onwe ya (1–500 ns) | Adoziri (dabere na Q-switch, nke na-abụkarị 50–200 ns) |
| Ọnụego Nkwughachi | A na-agbanwe agbanwe nke ọma (1 kHz–2 MHz) | Oke a kapịrị ọnụ ma ọ bụ nke dị warara |
| Mgbanwe | Elu (paịma ndị enwere ike ime ihe omume) | Dị ala |
| Ihe Ndị Dị Mkpa n'Ime Ngwa | Nhazi igwe nkenke, akara ugboro ugboro dị elu, nhazi ihe pụrụ iche | Mkpụcha izugbe, akara |
Oge ozi: Mee-15-2025