Kakaretso ea matla a phahamenglaser ea semiconductorkarolo ea pele ea nts'etsopele
Ha bokgoni le matla di ntse di ntlafala, di-diode tsa laser (mokhanni oa diode tsa laser) e tla tswela pele ho nkela mahlale a setso sebaka, ka hona e fetola tsela eo dintho di etswang ka yona le ho thusa ntshetsopele ya dintho tse ntjha. Kutlwisiso ya dintlafatso tsa bohlokwa ho di-laser tsa semiconductor tse matla haholo le yona e lekanyeditswe. Phetoho ya dielektrone ho di-laser ka di-semiconductor e ile ya bontshwa ka lekgetlo la pele ka 1962, mme ho latetse mefuta e mengata ya kgatelopele e tlatsetsang e tsamaisitseng kgatelopele e kgolo phetohong ya dielektrone ho di-laser tse nang le tlhahiso e phahameng. Kgatelopele ena e tsheheditse ditshebediso tsa bohlokwa ho tloha polokelong ya optical ho ya marangrang a optical ho ya masimong a mangata a indasteri.
Tlhahlobo ea tsoelo-pele ena le tsoelo-pele ea eona e bokellaneng e totobatsa monyetla oa tšusumetso e kholo le e atileng haholo libakeng tse ngata tsa moruo. Ha e le hantle, ka ntlafatso e tsoelang pele ea li-laser tsa semiconductor tse matla a phahameng, tšimo ea ts'ebeliso ea eona e tla potlakisa katoloso, 'me e tla ba le tšusumetso e kholo kholong ea moruo.
Setšoantšo sa 1: Papiso ea khanya le molao oa Moore oa li-laser tsa semiconductor tse matla a phahameng
Li-laser tse tiileng tsa boemo bo pompetsoeng ke diode leli-laser tsa faeba
Tsoelo-pele ho li-laser tsa semiconductor tse matla haholo le eona e lebisitse nts'etsopele ea theknoloji ea laser e theohelang, moo li-laser tsa semiconductor hangata li sebelisetsoang ho tsosa likristale tse nang le doped (li-laser tse nang le diode-pumped solid-state) kapa li-fiber tse nang le doped (li-laser tsa fiber).
Leha di-laser tsa semiconductor di fana ka matla a laser a sebetsang hantle, a manyane le a theko e tlase, di boetse di na le mefokolo e mmedi ya bohlokwa: ha di boloke matla mme kganya ya tsona e lekanyeditswe. Ha e le hantle, ditshebediso tse ngata di hloka di-laser tse pedi tse thusang; E nngwe e sebedisetswa ho fetola motlakase hore e be mosi wa laser, mme e nngwe e sebedisetswa ho ntlafatsa kganya ya mosi oo.
Li-laser tsa boemo bo tiileng tse pompeloang ke diode.
Mafelong a bo-1980, tšebeliso ea li-laser tsa semiconductor ho pompa li-laser tsa boemo bo tiileng e ile ea qala ho fumana thahasello e kholo ea khoebo. Li-laser tsa boemo bo tiileng tse pumped ka diode (DPSSL) li fokotsa boholo le ho rarahana ha litsamaiso tsa taolo ea mocheso (haholo-holo li-cooler tsa potoloho) le li-module tsa gain, tseo nalane e sebelisitseng mabone a arc ho pompa likristale tsa laser tsa boemo bo tiileng.
Bolelele ba leqhubu la laser ea semiconductor bo khethoa ho latela ho kopana ha litšobotsi tsa ho monya ha spectral le gain medium ea laser ea boemo bo tiileng, e leng se ka fokotsang mojaro oa mocheso haholo ha o bapisoa le spectrum ea ho ntša mahlaseli a leqhubu le lengata la lebone la arc. Ha ho nahanoa ka botumo ba li-laser tse nang le neodymium tse ntšang maqhubu a 1064nm, laser ea semiconductor ea 808nm e fetohile sehlahisoa se hlahisang haholo tlhahisong ea laser ea semiconductor ka lilemo tse fetang 20.
Bokgoni bo ntlafetseng ba ho pompa diode ba moloko wa bobedi bo ile ba kgoneha ka lebaka la kganya e eketsehileng ya di-laser tsa semiconductor tsa mekgwa e mengata le bokgoni ba ho tsitsisa bophara ba mela e menyenyane ya mosi o tswang ka ho sebedisa di-gratings tsa Bragg (VBGS) bohareng ba dilemo tsa bo-2000. Dibopeho tse fokolang le tse nyane tsa ho monya di-spectral tsa hoo e ka bang 880nm di tsositse thahasello e kgolo ho di-diode tsa pompo tse nang le kganya e phahameng tse tsitsitseng ka spectrally. Di-laser tsena tse nang le tshebetso e phahameng di etsa hore ho kgonehe ho pompa neodymium ka kotloloho boemong bo hodimo ba laser ba 4F3/2, ho fokotsa dikgaello tsa quantum mme ka hona ho ntlafatsa ho ntshwa ha mokgwa wa motheo ka matla a mahareng a hodimo, ao ho seng jwalo a neng a tla lekanyetswa ke dilense tsa mocheso.
Mathoasong a leshome la bobeli la lilemo la lekholo lena la lilemo, re ne re bona keketseho e kholo ea matla ho li-laser tsa 1064nm tsa mokhoa o le mong o fetelang holimo, hammoho le li-laser tsa tsona tsa phetoho ea maqhubu tse sebetsang maqhubung a bonahalang le a ultraviolet. Ka lebaka la bophelo bo bolelele ba matla a holimo a Nd: YAG le Nd: YVO4, ts'ebetso ena ea DPSSL Q-switched e fana ka matla a phahameng a pulse le matla a peak, e leng se etsang hore e be e loketseng bakeng sa ts'ebetso ea thepa e ablative le lits'ebetso tsa micromachining tse nepahetseng haholo.
Nako ea poso: Pulungoana-06-2023