Fiber Pulsed lasers yogcov khoom siv laseruas siv fibers doped nrog tsawg lub ntiaj teb ions (xws li ytterbium, erbium, thulium, thiab lwm yam) raws li qhov nruab nrab nce. Lawv muaj xws li ib tug nce nruab nrab, ib tug optical resonant kab noj hniav, thiab ib tug twj tso kua mis qhov chaw. Nws cov thev naus laus zis thev naus laus zis feem ntau suav nrog Q-hloov thev naus laus zis ( qib nanosecond), active mode-locking (picosecond level), passive mode-locking (femtosecond level), thiab main oscillation power amplification (MOPA) technology.
Cov ntawv thov kev lag luam npog hlau txiav, vuam, laser tu thiab lithium roj teeb TAB txiav hauv lub zog tshiab, nrog ntau hom tso zis hluav taws xob mus txog qib kaum-txhiab-watt. Hauv thaj teb ntawm lidar, 1550nm pulsed lasers, nrog rau lawv cov mem tes siab zog thiab lub qhov muag zoo, yog siv rau hauv ntau yam thiab tsheb-mounted radar systems.
Cov khoom tseem ceeb muaj xws li Q-hloov hom, MOPA hom thiab lub zog fiber ntaupulsed lasers. Qeb:
1. Q-hloov fiber ntau laser: Lub hauv paus ntsiab lus ntawm Q-switching yog ntxiv cov khoom poob-kho tau hauv lub laser. Nyob rau hauv feem ntau lub sij hawm, lub laser muaj ib tug loj poob thiab yuav luag tsis muaj teeb pom kev zoo. Tsis pub dhau lub sijhawm luv luv, txo qhov poob ntawm lub cuab yeej ua rau lub laser tso tawm cov mem tes luv luv heev. Q-hloov fiber ntau lasers tuaj yeem ua tiav txawm tias ua haujlwm lossis ua ntu zus. Cov cuab yeej siv tshuab feem ntau suav nrog ntxiv qhov kev siv zog siv hauv cov kab noj hniav kom tswj tau qhov poob ntawm lub laser. Cov txheej txheem Passive siv cov saturated absorbers los yog lwm yam kev tsis zoo xws li txhawb nqa Raman tawg thiab txhawb nqa Brillouin tawg los ua Q-modulation mechanisms. Cov pulses feem ntau tsim los ntawm Q-hloov txoj kev yog nyob rau theem nanosecond. Yog tias luv luv pulses yuav tsum tau tsim, nws tuaj yeem ua tiav los ntawm txoj kev ntsuas qhov ntsuas.
2. Hom-locked fiber ntau laser: Nws tuaj yeem tsim ultrashort pulses los ntawm kev ua haujlwm hom-locking lossis passive hom-locking txoj kev. Vim lub sij hawm teb ntawm lub modulator, lub pulse dav generated los ntawm active hom-locking feem ntau yog nyob rau theem picosecond. Passive hom-locking siv passive hom-locking li, uas muaj lub sij hawm teb luv luv thiab tuaj yeem tsim cov pulses ntawm femtosecond scale.
Ntawm no yog ib qho kev qhia luv luv rau lub hauv paus ntsiab lus ntawm pwm locking.
Muaj ntau ntau hom longitudinal hom nyob rau hauv lub laser resonant kab noj hniav. Rau lub nplhaib-zoo li kab noj hniav, lub sij hawm ncua sij hawm ntawm lub longitudinal hom yog sib npaug rau / CCL, qhov twg C yog qhov ceev ntawm lub teeb thiab CL yog qhov kho qhov muag txoj kev ntev ntawm lub teeb liab lub teeb mus ncig ib ncig ntawm lub kab noj hniav. Feem ntau hais lus, qhov nce bandwidth ntawm fiber ntau lasers yog qhov loj, thiab ntau hom longitudinal ua haujlwm ib txhij. Tag nrho cov qauv uas lub laser tuaj yeem ua tau nyob ntawm qhov ntev hom ncua sij hawm ∆ν thiab qhov nce bandwidth ntawm qhov nce nruab nrab. Qhov me me qhov ntev hom ncua sij hawm, qhov ntau dua qhov nce bandwidth ntawm nruab nrab, thiab ntau hom longitudinal tuaj yeem txhawb nqa. Conversely, qhov tsawg.
3. Quasi-nruam laser (QCW laser): Nws yog ib hom kev ua haujlwm tshwj xeeb ntawm kev nruam yoj lasers (CW) thiab pulsed lasers. Nws ua tiav cov zis hluav taws xob sai sai los ntawm lub sijhawm ntev pulses (lub voj voog ua haujlwm feem ntau ≤1%) thaum tuav lub zog nruab nrab qis. Nws muab cov kev ruaj ntseg ntawm cov lasers tas li nrog lub siab tshaj plaws lub zog kom zoo dua ntawm cov lasers pulsed.
Txoj cai hauv paus ntsiab lus: QCW lasers thauj khoom modules nyob rau hauv tas li ntawdlaserCircuit Court txiav lasers nruam mus rau hauv lub luag hauj lwm siab voj voog mem tes sequences, ua tau yooj yim hloov ntawm nruam thiab mem tes hom. Nws lub ntsiab feature yog "lub sij hawm luv luv tawg, lub sij hawm txias txias" mechanism. Cov cua txias hauv qhov sib txawv ntawm cov mem tes txo cov cua sov thiab txo qhov kev pheej hmoo ntawm cov khoom thermal deformation.
Qhov zoo thiab nta: Kev sib koom ua ke dual-hom: Nws ua ke lub zog siab tshaj plaws ntawm hom mem tes (txog li 10 npaug ntawm qhov nruab nrab lub zog ntawm hom txuas ntxiv) nrog rau kev ua haujlwm siab thiab kev ruaj ntseg ntawm kev txuas mus ntxiv. ua
Kev siv hluav taws xob tsawg: Kev hloov pauv hluav taws xob hluav taws xob ua kom pom kev ua tau zoo thiab tsis tshua muaj nqi siv mus sij hawm ntev. ua
Beam zoo: Lub siab beam zoo ntawm fiber ntau lasers txhawb cov micro-machining meej.
Lub sij hawm xa tuaj: Nov-10-2025