Dab tsi yog qhov txawv ntawm Ib hom Laser thiab Multi-hom Laser?

Qhov tseem ceeb sib txawv ntawm aIb hom Laserthiab aMultimode Laseryog tias ib hom laser tsuas muaj ib hom nyob rau hauv nws cov zis beam qauv, thaum ib tug multimode laser muaj ntau hom nyob rau hauv nws output beam qauv. Yog li ntawd, peb tuaj yeem txiav txim seb lub laser yog ib hom lossis ntau hom los ntawm M2 (beam zoo). Raws li qhov sib txawv M2, lub laser tuaj yeem muab faib ua 3 hom. M2<1.3 is a pure single-mode laser, M2 between 1.3 and 2.0 is a quasi-single-mode laser, and M2>2.0 yog laser ntau hom.

Qhov sib txawv ntawm hom yuav cuam tshuam ncaj qha rau kev faib tawm ntawm lub zog. Los ntawm qhov pom ntawm lub zog faib, ib hom lasers nthuav tawm Gaussian kev faib tawm, thaum ntau hom lasers nthuav tawm ib qho kev faib ncaj nraim, nrog rau nruab nrab lub zog thiab superposition ntawm ntau hom, yog li cov nqaj zoo tsis zoo li. raws li ib hom. Lub zog ntawm ib hom laser yog cov concentrated. Tom qab tib lub zog laser yog tsom los ntawm tib lub tshuab kho qhov muag, lub zog ntawm ib hom laser ntawm kev tsom xam yog ntau dua li ntawm ntau hom laser. Los ntawm kev sib piv lawv cov beam zoo, focal (los yog defocus) qhov chaw txoj kab uas hla, divergence lub kaum sab xis, thiab focal (los yog defocus) lub zog ceev, nws yuav pom tau hais tias singlemode lasers outperform multimode lasers nyob rau hauv cov specifications. Qhov tseem ceeb tshaj plaws, vim muaj cov qauv kev txiav txim siab dua hauv multimode lasers, multimode lasers muaj ntau dua dispersion thiab ntau lub zog poob dua li ib hom lasers. Yog li multimode lasers tsis yog ib qho kev xaiv zoo rau kev sib kis mus ntev.

Txawm li cas los xij, ib hom lasers tsis zoo tshaj rau multimode lasers hauv qee qhov kev hwm. Ib hom ib hom lasers muaj nyias cores thiab me me diameters (feem ntau tsawg dua 10 μm). Qhov kev puas tsuaj ntawm optical fiber ntau yog tsawg heev, thiab nws yog ib qho nyuaj rau tiv thaiv high-zog lub teeb nthwv dej. Fiber laser yuav tsum tau lub teeb liab laser thiab twj tso kua mis lub teeb yuav kis tau nyob rau hauv lub fiber tub ntxhais nyob rau tib lub sij hawm, yog li lub zog tso zis ntawm fiber ntau laser yog tsawg heev, qhov chaw ntawm fiber kawg lub ntsej muag yog me me, nws yog ib qho nyuaj rau ob peb twj tso kua mis teeb, thiab lub lub teeb-rau-lub teeb conversion efficiency ntawm fiber ntau laser yog tsawg heev. Txij li cov tub ntxhais ntawm ib hom laser yog thinner, cov nyhuv nonlinear ntawm ib hom laser kuj loj. Multi-mode lasers nce cov tub ntxhais txoj kab uas hla ntawm lub hauv paus ntawm ib hom lasers, kom muaj ntau hom hauv fiber ntau thiab txhawb nqa ntau hom kev sib kis. Tom qab lub coherent superposition ntawm ntau hom teb nyob rau hauv ib tug multimode laser, hom teb tis nyob rau hauv tag nrho cov tub ntxhais fiber ntau yog tiaj tus, uas yuav txo tau tus kheej-focusing nyhuv thaum lub sij hawm optical kis tau tus mob. Qhov kev ncua deb ntawm lub teeb liab hluav taws xob hauv lub teeb pom kev zoo tuaj yeem ua tau ntev, thiab kev ruaj ntseg yog siab. Multimode lasers tsis tsuas yog nce qhov kev puas tsuaj rau qhov pib, tab sis kuj txo lub zog lub zog ntawm lub laser los ntawm kev ua kom qhov chaw hla ntawm cov fiber ntau, yog li ua kom muaj txiaj ntsig zoo rau cov nyhuv nonlinear hauv fiber ntau.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.