Kakaretso ea matla a phahamenglaser ea semiconductorntshetsopele karolo ya pele
Ha ts'ebetso le matla li ntse li tsoela pele ho ntlafala, li-laser diode (mokhanni oa laser diodes) e tla tsoela pele ho nka sebaka sa mahlale a khale, ka ho etsa joalo a fetole tsela eo lintho li entsoeng ka eona le ho nolofalletsa nts'etsopele ea lintho tse ncha. Kutloisiso ea lintlafatso tse kholo ho li-laser tsa semiconductor tse matla le tsona li na le moeli. Phetolelo ea lielektrone ho li-laser ka li-semiconductors e ile ea bontšoa ka lekhetlo la pele ka 1962, 'me ho latetse likhatelopele tse ngata tse tlatselletsang tse tsamaisitseng tsoelopele e kholo phetohong ea lielektrone ho lilase tsa tlhahiso e phahameng. Tsoelo-pele ena e tšehelitse lits'ebetso tsa bohlokoa ho tloha polokelong ea optical ho ea ho marang-rang a optical ho ea libakeng tse ngata tsa indasteri.
Tlhahlobo ea likhatelopele tsena le tsoelo-pele ea tsona e ntseng e eketseha e totobatsa monyetla oa hore ho be le tšusumetso e matla le ho feta libakeng tse ngata tsa moruo. Ha e le hantle, ka ntlafatso e tsoelang pele ea li-laser tsa semiconductor tsa matla a phahameng, sebaka sa eona sa ts'ebeliso se tla potlakisa katoloso, 'me se tla ba le phello e matla kholong ea moruo.
Setšoantšo sa 1: Papiso ea leseli le molao oa Moore oa matla a phahameng a semiconductor lasers
Diode-pumped solid-state lasers leli-laser tsa fiber
Tsoelo-pele ea li-laser tsa semiconductor tsa matla a phahameng le tsona li lebisitse ho nts'etsopele ea thekenoloji ea laser e tlase, moo lilase tsa semiconductor hangata li sebelisetsoang ho hlasimolla (pompa) likristale tsa doped (diode-pumped solid-state lasers) kapa likhoele tsa doped (fiber lasers).
Le hoja li-laser tsa semiconductor li fana ka matla a laser a sebetsang hantle, a manyenyane, le a theko e tlaase, a boetse a na le mefokolo e 'meli ea bohlokoa: ha e boloke matla le ho khanya ha tsona ho lekanyelitsoe. Ha e le hantle, likopo tse ngata li hloka li-lasers tse peli tse sebetsang; E 'ngoe e sebelisetsoa ho fetola motlakase hore e be laser emission, 'me e' ngoe e sebelisetsoa ho ntlafatsa khanya ea tlhahiso eo.
Li-laser tsa boemo bo tiileng ba diode-pumped.
Ho elella bofelong ba lilemo tsa bo-1980, tšebeliso ea li-lasers tsa semiconductor ho pompa lasers ea boemo bo tiileng e ile ea qala ho fumana thahasello e kholo ea khoebo. Diode-pumped solid-state lasers (DPSSL) e fokotsa haholo boholo le ho rarahana ha litsamaiso tsa tsamaiso ea mocheso (haholo-holo li-coolers) le ho fumana li-module, tseo ho tloha khale li neng li sebelisa mabone a arc ho pompa likristale tsa laser tse tiileng.
Bophahamo ba laser ea semiconductor bo khethiloe ho ipapisitse le ho kopana ha litšobotsi tsa spectral absorption le mokhoa oa ho fumana oa laser e tiileng, e ka fokotsang boima ba mocheso haholo ha bo bapisoa le bongata ba tlhahiso ea lebone la arc. Ha ho nahanoa ka botumo ba li-lasers tsa neodymium-doped tse emitting 1064nm wavelength, laser ea 808nm semiconductor e fetohile sehlahisoa se hlahisang litholoana tse ngata tlhahisong ea laser ea semiconductor ka lilemo tse fetang 20.
Bokhoni bo ntlafetseng ba ho pompa diode molokong oa bobeli bo entsoe hore bo khonehe ke khanya e eketsehileng ea li-laser tsa mefuta e mengata ea semiconductor le bokhoni ba ho tsitsisa li-linewidths tse moqotetsane tsa tlhahiso ka ho sebelisa li-bragg gratings (VBGS) tse ngata bohareng ba lilemo tsa bo-2000. Litšobotsi tse fokolang le tse tšesaane tsa ho monya tse ka bang 880nm li tsositse thahasello e kholo ho li-diode tsa pompo tse khanyang tse khanyang. Li-lasers tsena tse sebetsang hantle li etsa hore ho khonehe ho pompa neodymium ka kotloloho boemong bo kaholimo ba laser ea 4F3/2, ho fokotsa likhaello tsa quantum mme ka hona ho ntlafatsa ho ntšoa ha mokhoa oa mantlha ka matla a mahareng a holimo, a neng a ka fokotsoa ke lilense tsa mocheso.
Mathoasong a lilemo tse leshome tsa bobeli tsa lekholo lena la lilemo, re ne re bona keketseho e kholo ea matla ho li-laser tsa 1064nm tsa mokhoa o le mong, hammoho le li-laser tsa tsona tse feto-fetohang khafetsa tse sebetsang makhubung a bonahalang le a ultraviolet. Ho latela nako e telele ea bophelo ba Nd: YAG le Nd: YVO4, ts'ebetso ena ea DPSSL Q-switched e fana ka matla a phahameng a pulse le matla a tlhōrō, e leng se etsang hore e be tse loketseng bakeng sa ts'ebetso ea lisebelisoa tsa ablative le lisebelisoa tse phahameng tsa micromachining.
Nako ea poso: Nov-06-2023