Muaj lasers tau dav categorized ua plaub hom. Lawv txawv nyob rau hauv lub laser nruab nrab los yog qauv siv, lub wavelength ntawm oscillation, thiab lub hauv paus ntawm excitation. Lub laser nruab nrab yog ib yam khoom uas muaj cov atoms uas hloov lub zog ntawm excitation lub teeb rau hauv lub teeb laser, thiab hom lasers yog categorized raws li qhov nruab nrab.
1: Solid-state laser: feem ntau YAG laser thiab YVO4 laser, laser nruab nrab siv YAG, YVO4 crystallization.
2: Gas laser: CO2 laser nrog CO2 roj raws li qhov nruab nrab yog dav siv.
3: Semiconductor laser: Ib lub laser uas siv lub semiconductor nrog cov txheej txheem ua haujlwm (lub teeb-emitting txheej) qauv ua qhov nruab nrab.
4: Fiber laser: Ib hom laser uas tau dhau los ua thoob plaws hauv lub xyoo pua 21st, siv cov fiber ntau optical li nruab nrab.
Semiconductor laser
Overlapping semiconductor crystals ntawm cov khoom sib txawv los tsim ib txheej txheej (luminescent txheej) los tsim lub teeb. Lub teeb yog amplified los ntawm kev rov qab mus rau ntawm ib khub ntawm daim iav uas tsim ob kawg, thaum kawg tsim ib lub laser.
Gas Laser (CO2 Laser)
CO2 laser yog ib lub laser uas siv cov pa roj CO2 ua nws qhov nruab nrab. Hauv ib lub raj uas muaj CO2 roj, lub phaj electrode tau teeb tsa los ua kom muaj paug tawm. Lub phaj electrode txuas nrog lub zog hluav taws xob sab nraud kom nws tuaj yeem noj nrog hluav taws xob ntau zaus raws li qhov ua kom muaj zog. Lub plasma yog tsim nyob rau hauv cov pa roj vim qhov paug ntawm cov electrodes, thiab cov CO2 molecules hloov mus rau hauv ib tug zoo siab lub xeev, thiab thaum tus naj npawb no nce, lawv pib radiate nrog excitation.
Solid-state laser (YAG laser, sab siv txoj kev)
Lub YAG laser (sab twj tso kua mis txoj kev) yog ib tug solid-state laser uas siv YAG muaju, uas yog crystals ntawm Yttrium Aluminium Garnet nrog neodymium ntxiv, raws li lub laser nruab nrab. Lub laser muaj ib qho excitation LD ntawm ob sab uas tig mus rau lub axis ntawm YAG siv lead ua, ib nkawm iav los tsim ib lub resonator, thiab Q-hloov ntawm ob. Nws yog siv rau kev kos, txiav, engraving, thiab vuam ntawm cov hlau.
Solid-state laser (YVO4 laser, sab siv txoj kev)
Lub YVO4 laser yog ib tug solid-state laser uas siv YVO4 muaju, uas yog yttrium vanadate crystals nrog neodymium ntxiv raws li nyob rau hauv YAG, raws li ib tug laser nruab nrab. Ib nkawm iav yog siv los tsim ib lub wiper los ntawm unilateral irradiation ntawm excitation lub teeb los ntawm lub ntsej muag kawg ntawm lub YVO4 siv lead ua, thiab cov iav yog configured nrog ib tug siv lead ua thiab Q-hloov ntawm lawv. Lub teeb zoo laser tuaj yeem tso tawm.
Fiber Laser
Fiber lasers siv optical fibers ua ib tug nruab nrab thiab yog ib yam khoom ntawm kev loj hlob ntawm interruptive amplification technology rau kev sib txuas lus ntev mus rau high-power output lasers. Cov fiber ntau muaj cov tub ntxhais uas xa lub teeb nyob rau hauv nruab nrab thiab ib tug hlau cladding uas npog cov tub ntxhais nyob rau hauv concentric voj voog. Fiber laser amplifies lub teeb nrog cov tub ntxhais no ua lub laser nruab nrab.
Fiber laser feem ntau yog tsim los ntawm lub teeb pom kev zoo hu ua noob lub teeb tsim los ntawm lub laser diode (Noob LD), uas yog ces amplified los ntawm ntau tshaj ob fiber amplifiers. LD rau excitation yog nruab nrog ib tug xov tooj ntawm ib lub raj emitter (ib qho rau lub teeb-emitting txheej) LDs, thiab txhua LD muaj ib tug tsawg zog tso zis, yog li nws muaj qhov zoo ntawm cov thermal load thiab paub lub neej ntev. Tsis tas li ntawd, qhov ntau dua ntawm LDs, lub zog ntau dua ntawm lub laser tuaj yeem pom tau. Fiber laser oscillates nrog high efficiency thiab muaj tsawg zog noj piv rau solid-state laser thiab roj laser.
Optical fiber ntau rau amplification (preamplifier, main amplifier) yog 3- txheej txheej nrog rau cov tub ntxhais thiab 2 txheej ntawm hlau cladding. Lub teeb pom kev nkag mus rau sab hauv hlau cladding (sab hauv cladding) thiab Yb-ntxiv core, ua rau cov atoms hauv cov tub ntxhais hloov mus rau lub xeev zoo siab. Lub teeb laser yog nyob rau hauv lub hauv paus ua ntej thiab tom qab ntawd nthuav dav los ntawm cov atoms zoo siab, ua kom khaus ntau dua qhov nws nce mus rau hauv nruab nrab. Tsis zoo li solid-state lossis roj lasers, lub teeb mus rau hauv ib qho kev taw qhia thiab tsis taug kev rov qab thiab tawm mus.
