Tsoelo-pele ea Lipatlisiso ea Likristale tsa Electro-Optic Q-Switched - Karolo ea 1: Selelekela

Tsoelo-pele ea Lipatlisiso ea Likristale tsa Electro-Optic Q-Switched - Karolo ea 1: Selelekela

Li-laser tsa matla a phahameng a phahameng li na le lits'ebetso tsa bohlokoa lipatlisisong tsa mahlale le mafapheng a indasteri ea sesole joalo ka ts'ebetso ea laser le tekanyo ea motlakase oa lifoto. Laser ea pele lefatšeng e hlahile ka bo-1960. Ka 1962, McClung o ile a sebelisa sele ea nitrobenzene Kerr ho boloka matla le ho lokolloa ka potlako, ka hona ho fumana lebone la pulsed le matla a holimo. Ho hlaha ha thekenoloji ea Q-switching ke katleho ea bohlokoa nalaneng ea nts'etsopele ea matla a phahameng a matla a laser. Ka mokhoa ona, matla a laser a tsoelang pele kapa a pharaletseng a hatelloa hore e be pulse ka bophara bo moqotetsane haholo. Matla a tlhōrō ea laser a eketsoa ka litaelo tse 'maloa tsa boholo. Theknoloji ea electro-optic Q-switching e na le melemo ea ho fetola nako e khutšoanyane, tlhahiso e tsitsitseng ea pulse, ho lumellana hantle, le tahlehelo e tlaase ea cavity. Matla a tlhōrō a laser ea tlhahiso a ka fihla habonolo li-megawatt tse makholo.

Electro-optic Q-switching ke theknoloji ea bohlokoa bakeng sa ho fumana bophara bo moqotetsane ba pulse le li-lasers tsa matla a holimo. Molao-motheo oa eona ke ho sebelisa phello ea electro-optic ea likristale ho fihlela liphetoho tse sa lebelloang tsa tahlehelo ea matla ea laser resonator, ka hona, ho laola polokelo le ho lokolloa ha matla ka potlako ka har'a cavity kapa laser medium. Tšusumetso ea electro-optical ea kristale e bua ka ketsahalo ea 'mele eo ho eona leseli la refractive la khanya ka har'a kristale le fetohang ka matla a tšimo ea motlakase e sebelisoang ea kristale. Ketsahalo eo ho eona index ea refractive e fetohang le matla a sebaka sa motlakase se sebelisitsoeng se na le kamano e haufi e bitsoa linear electro-optics, kapa Pockels Effect. Ketsahalo ea hore index ea refractive e fetoha le lisekoere tsa matla a tšimo ea motlakase a sebelisitsoeng li na le kamano e tšoanang e bitsoa "electro-optic effect" ea bobeli kapa Kerr Effect.

Tlas'a maemo a tloaelehileng, phello ea elektro-optic ea kristale e bohlokoa haholo ho feta phello ea bobeli ea electro-optic. Mohala oa motlakase oa motlakase o sebelisoa haholo ho theknoloji ea electro-optic Q-switching. E teng ka har'a likristale tsohle tse 20 tse nang le lihlopha tse se nang centrosymmetric point. Empa joalo ka lisebelisoa tse ntle tsa elektro-optic, likristale tsena ha li hlokehe feela hore li be le phello e hlakileng ea electro-optic, empa hape le sebaka se nepahetseng sa phetisetso ea leseli, moeli o phahameng oa tšenyo ea laser, le botsitso ba thepa ea physicochemical, litšobotsi tse ntle tsa mocheso, boiketlo ba ts'ebetso, le hore na kristale e le 'ngoe e nang le boholo bo boholo le boleng bo phahameng e ka fumanoa. Ka kakaretso, likristale tse sebetsang tsa electro-optic Q-switching li hloka ho lekanyetsoa ho tloha likarolong tse latelang: (1) electro-optic coefficient e sebetsang hantle; (2) moeli oa tšenyo ea laser; (3) sebaka sa phetiso ea leseli; (4) ho hanyetsa motlakase; (5) dielectric constant; (6) litšobotsi tsa 'mele le lik'hemik'hale; (7) boqhetseke. Ka nts'etsopele ea ts'ebeliso le nts'etsopele ea theknoloji ea pulse e khuts'oane, makhetlo a mangata a ho pheta-pheta, le lisebelisoa tse phahameng tsa laser, litlhoko tsa ts'ebetso ea likristale tsa Q-switching li ntse li eketseha.

Mokhahlelong oa pele oa nts'etsopele ea theknoloji ea electro-optic Q-switching, likristale tse neng li sebelisoa feela e ne e le lithium niobate (LN) le potassium di-deuterium phosphate (DKDP). LN crystal e na le moeli o tlase oa tšenyo ea laser 'me e sebelisoa haholo ho li-lasers tsa matla a tlase kapa a mahareng. Ka nako e ts'oanang, ka lebaka la ho khutlela morao ha theknoloji ea ho lokisa kristale, boleng ba optical ba LN crystal bo bile bo sa tsitsang ka nako e telele, e leng se thibelang tšebeliso ea eona e pharaletseng ho lasers. kristale ea DKDP ke kristale ea phosphoric acid potassium dihydrogen (KDP). E na le moeli o batlang o le holimo oa tšenyo 'me e sebelisoa haholo ho li-electro-optic Q-switching laser systems. Leha ho le joalo, kristale ea DKDP e na le tšekamelo ea ho senyeha 'me e na le nako e telele ea ho hōla, e fokotsang tšebeliso ea eona ho isa tekanyong e itseng. Rubidium titanyl oxyphosphate (RTP) crystal, barium metaborate (β-BBO) crystal, lanthanum gallium silicate (LGS) crystal, lithium tantalate (LT) crystal le potassium titanyl phosphate (KTP) crystal li boetse li sebelisoa ho electro-optic Q-switching laser. litsamaiso.

WISOPTIC-DKDP POCKELS CELL

 DKDP Pockels cell cell e entsoeng ke WISOPTIC (@1064nm, 694nm)

 

 


Nako ea poso: Sep-23-2021