Txheej txheem cej luam ntawm lub zog siabsemiconductor laserkev loj hlob ib feem
Raws li kev ua tau zoo thiab lub zog txuas ntxiv txhim kho, laser diodes (laser diodes tsav tsheb) yuav txuas ntxiv hloov cov thev naus laus zis niaj hnub, yog li hloov cov khoom tsim thiab ua kom muaj kev loj hlob ntawm cov khoom tshiab. Kev nkag siab txog kev txhim kho tseem ceeb hauv high-power semiconductor lasers kuj txwv. Kev hloov dua siab tshiab ntawm electrons mus rau lasers ntawm semiconductors yog thawj zaug pom nyob rau hauv 1962, thiab ntau yam kev sib txuas ntxiv tau ua raws li uas tau ua rau muaj kev nce qib loj hauv kev hloov pauv ntawm electrons rau high-productivity lasers. Cov kev nce qib no tau txhawb nqa cov ntawv thov tseem ceeb los ntawm kev cia khoom kho qhov muag mus rau kev sib txuas lus kho qhov muag mus rau ntau yam kev lag luam.
Kev tshuaj xyuas ntawm cov kev nce qib no thiab lawv cov kev nce qib nce ntxiv qhia txog lub peev xwm rau kev cuam tshuam ntau dua thiab muaj kev cuam tshuam ntau dua hauv ntau thaj chaw ntawm kev lag luam. Qhov tseeb, nrog kev txhim kho txuas ntxiv ntawm lub zog hluav taws xob semiconductor lasers, nws daim ntawv thov kev lag luam yuav nrawm nrawm, thiab yuav muaj kev cuam tshuam loj rau kev loj hlob ntawm kev lag luam.
Daim duab 1: Kev sib piv ntawm luminance thiab Moore txoj cai ntawm lub zog siab semiconductor lasers
Diode-pumped solid-state lasers thiabfiber ntau lasers
Kev nce qib nyob rau hauv high-power semiconductor lasers kuj tau coj mus rau kev txhim kho ntawm downstream laser technology, qhov twg semiconductor lasers feem ntau yog siv los excite (tswj) doped crystals (diode-pumped solid-state lasers) los yog doped fibers (fiber lasers).
Txawm hais tias semiconductor lasers muab cov txiaj ntsig zoo, me me, thiab tus nqi qis laser zog, lawv kuj muaj ob qhov kev txwv tseem ceeb: lawv tsis khaws lub zog thiab lawv qhov ci ntsa iab. Yeej, ntau daim ntawv thov xav tau ob lub lasers muaj txiaj ntsig; Ib qho yog siv los hloov hluav taws xob rau hauv laser emission, thiab lwm yam yog siv los txhim kho qhov ci ntawm qhov emission.
Diode-pumped solid-state lasers.
Nyob rau hauv lub lig 1980s, kev siv ntawm semiconductor lasers mus twj tso kua mis-lub xeev lasers pib tau txais txiaj ntsim kev lag luam tseem ceeb. Diode-pumped solid-state lasers (DPSSL) ua rau txo qhov loj thiab nyuaj ntawm thermal tswj systems (feem ntau lub voj voog txias) thiab nce modules, uas keeb kwm tau siv arc teeb los tso cov khoom siv hauv lub xeev laser.
Lub wavelength ntawm lub semiconductor laser yog xaiv raws li nyob rau hauv sib tshooj ntawm spectral absorption yam ntxwv nrog lub nce nruab nrab ntawm lub solid-state laser, uas yuav txo tau lub thermal load piv rau lub wideband emission spectrum ntawm lub arc teeb. Xav txog qhov muaj koob meej ntawm neodymium-doped lasers emitting 1064nm wavelength, 808nm semiconductor laser tau dhau los ua cov khoom tsim tau tshaj plaws hauv semiconductor laser ntau dua 20 xyoo.
Kev txhim kho diode twj siv tau zoo ntawm lub cim thib ob tau ua tiav los ntawm kev ua kom pom kev ci ntsa iab ntawm ntau hom semiconductor lasers thiab muaj peev xwm ua kom ruaj khov nqaim emission linewidths siv bulk Bragg gratings (VBGS) hauv nruab nrab-2000s. Qhov tsis muaj zog thiab nqaim spectral absorption yam ntxwv ntawm ib ncig ntawm 880nm tau aroused zoo txaus siab rau spectrally ruaj khov siab brightness twj diodes. Cov lasers kev ua tau zoo dua no ua rau nws tuaj yeem tso neodymium ncaj qha rau ntawm lub laser theem siab ntawm 4F3/2, txo qis quantum deficits thiab yog li txhim kho hom kev rho tawm ntawm lub zog nruab nrab siab dua, uas yuav txwv tsis pub los ntawm thermal lo ntsiab muag.
Los ntawm lub xyoo pua thib ob thaum ntxov ntawm lub xyoo pua no, peb tau pom lub zog tseem ceeb hauv ib qho kev hloov pauv 1064nm lasers, nrog rau lawv cov zaus hloov pauv lasers ua haujlwm hauv qhov pom thiab ultraviolet wavelengths. Muab lub zog lub neej ntev ntev ntawm Nd: YAG thiab Nd: YVO4, cov DPSSL Q-hloov cov haujlwm no muab lub zog pulse siab thiab lub zog siab, ua rau lawv zoo tagnrho rau kev ua cov khoom siv ablative thiab high-precision micromachining daim ntaub ntawv.
Post lub sij hawm: Nov-06-2023