Litaba - Hobaneng re sebelisa Nd: kristale ea YAG joalo ka mokhoa oa ho fumana chelete ho laser ea DPSS?

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Laser Gain Medium ke eng?

Laser gain medium ke sesebediswa se hodisang kganya ka tlhahiso e hlasimollang. Ha liathomo kapa limolek'hule tsa seathomo li thabela maemo a phahameng a matla, li ka ntša li-photon tsa bolelele bo itseng ba maqhubu ha li khutlela boemong bo tlase ba matla. Ts'ebetso ena e holisa khanya e fetang bohareng, e leng ea bohlokoa ts'ebetsong ea laser.

[Blog e Amanang:Likarolo tsa bohlokoa tsa laser]

Usual Gain Medium ke Eng?

The gain medium e ka ba tse fapa-fapaneng, ho akarelletsa lelikhase, metsi (dae), tse tiileng(likristale kapa likhalase tse nang le li-ion tsa tšepe tse sa tloaelehang kapa tsa phetoho), le li-semiconductors.Li-laser tsa boemo bo tiileng, ka mohlala, hangata li sebelisa likristale tse kang Nd: YAG (Neodymium-doped Yttrium Aluminium Garnet) kapa likhalase tse nang le likarolo tse sa tloaelehang tsa lefatše. Li-laser tsa dae li sebelisa lidae tsa tlhaho tse qhibilihisitsoeng ka har'a lihlapolli, 'me li-laser tsa khase li sebelisa likhase kapa motsoako oa khase.

Laser rod (ho tloha ka ho le letšehali ho ea ho le letona): Ruby, Alexandrite, Er:YAG, Nd:YAG

Phapang lipakeng tsa Nd (Neodymium), Er (Erbium), le Yb (Ytterbium) joalo ka li-mediums tsa phaello.

haholo-holo li amana le maqhubu a tsona a tlhahiso, mekhoa ea phetisetso ea matla, le lits'ebetso, haholo maemong a lisebelisoa tsa laser tse doped.

Emission Wavelengths:

- Er: Erbium e atisa ho hlahisa 1.55 µm, e sebakeng se sireletsehileng sa mahlo 'me e sebetsa haholo bakeng sa lits'ebetso tsa mehala ea puisano ka lebaka la tahlehelo ea eona e tlase ho li-optical fibers (Gong et al., 2016).

- Yb: Ytterbium hangata e ntša ho pota 1.0 ho isa ho 1.1 µm, e etsa hore e tšoanelehe bakeng sa mefuta e mengata ea likopo, ho kenyeletsoa lilasers tse matla le liamplifiers. Hangata Yb e sebelisoa joalo ka sensitizer bakeng sa Er ho ntlafatsa katleho ea lisebelisoa tsa Er-doped ka ho fetisetsa matla ho tloha ho Yb ho ea ho Er.

- Nd: Lisebelisoa tse entsoeng ka Neodymium hangata li ntša hoo e ka bang 1.06 µm. Nd:YAG, mohlala, e tsebahala ka katleho ea eona 'me e sebelisoa haholo ho li-laseser tsa indasteri le tsa bongaka (Y. Chang et al., 2009).

Mekhoa ea Phetisetso ea Matla:

- Er le Yb Co-doping: Tšebelisano-'moho ea Er le Yb sebakeng sa moamoheli e molemo bakeng sa ho ntlafatsa tlhahiso ea 1.5-1.6 µm. Yb e sebetsa joalo ka sensitizer e sebetsang hantle bakeng sa Er ka ho monya leseli la pompo le ho fetisetsa matla ho Er ions, e lebisang ho phallo e matlafatsoang sehlopheng sa likhokahano. Phetiso ena ea matla e bohlokoa bakeng sa ts'ebetso ea Er-doped fiber amplifiers (EDFA) (DK Vysokikh et al., 2023).

- Nd: Nd hangata ha e hloke sensitizer joalo ka Yb lits'ebetsong tsa Er-doped. Ho sebetsa hantle ha Nd ho tsoa ho monyeng ha eona ka ho toba ha leseli la pompo le tlhahiso e latelang, e leng se etsang hore e be mokhoa o bonolo le o sebetsang oa ho fumana laser.

Lisebelisoa:

- Er:E sebelisoa haholo mecheng ea likhokahano ka lebaka la tlhahiso ea eona ho 1.55 µm, e tsamaellanang le fensetere ea tahlehelo e tlase ea silika optical fibers. Li-mediums tsa Er-doped gain li bohlokoa bakeng sa li-amplifiers tsa optical le lasers lits'ebetsong tsa puisano tse hole tsa fiber optic.

-Yb:Hangata e sebelisoa lits'ebetsong tsa matla a phahameng ka lebaka la sebopeho sa eona sa elektronike se batlang se le bonolo se lumellang ho pompa diode ka katleho le matla a phahameng a matla. Lisebelisoa tsa Yb-doped li boetse li sebelisoa ho ntlafatsa ts'ebetso ea lisebelisoa tsa Er-doped.

- Nd: E loketse hantle bakeng sa mefuta e mengata ea likopo, ho tloha ho ho itšeha ha indasteri le ho tjheseletsa ho ea ho lasers ea bongaka. Nd: Li-lasers tsa YAG li bohlokoa haholo bakeng sa ts'ebetso ea tsona, matla le ho feto-fetoha ha maemo.

Hobaneng re khethile Nd:YAG joalo ka mokhoa oa ho fumana chelete ho laser ea DPSS

Laser ea DPSS ke mofuta oa leseare o sebelisang mokhoa o tiileng oa boemo (joaloka Nd: YAG) o pompetsoeng ke semiconductor laser diode. Theknoloji ena e lumella li-laser tse sebetsang hantle, tse sebetsang hantle tse khonang ho hlahisa maballo a boleng bo holimo maboneng a bonahalang ho isa ho infrared. Bakeng sa sengoloa se felletseng, o kanna oa nahana ka ho batla ka har'a lipolokelo tsa mahlale tse tsebahalang kapa baphatlalatsi bakeng sa litlhahlobo tse felletseng mabapi le theknoloji ea laser ea DPSS.

[Sehlahisoa se Amanang :Diode-pumped solid-state laser]

Nd:YAG hangata e sebelisoa e le mokhoa oa ho fumana chelete ho li-module tsa laser tsa semiconductor-pumped laser ka mabaka a 'maloa, joalo ka ha ho totobatsoa ke lithuto tse fapaneng:

1.Boitsebelo bo Phahameng le Phallo ea Matla: Moralo le lipapiso tsa mochini oa laser oa diode oa Nd: YAG o bonts'itse ts'ebetso e kholo, ka laser ea diode-pumped Nd:YAG e fanang ka matla a phahameng a karolelano ea 220 W ha e ntse e boloka matla a sa khaotseng ka pulse ka mefuta e mengata ea maqhubu. Sena se bonts'a ts'ebetso e phahameng le bokhoni ba tlhahiso e phahameng ea matla a Nd: YAG lasers ha e pompeloa ke diode (Lera et al., 2016).
2.Ts'ebetso ea ho Fetola le ho Tšepahala: Nd: Li-ceramics tsa YAG li bontšitsoe hore li sebetsa ka katleho maemong a fapaneng a maqhubu, ho kenyelletsa le maqhubu a sireletsehileng a mahlo, a nang le bokhoni bo phahameng ba optical-to-optical. Sena se bonts'a ho feto-fetoha ha maemo le ho ts'epahala ha Nd:YAG joalo ka mokhoa oa ho fumana chelete lits'ebetsong tse fapaneng tsa laser (Zhang et al., 2013).
3.Bophelo bo bolelele le Boleng ba Beam: Patlisiso mabapi le laser ea Nd:YAG e sebetsang hantle haholo, e pompetsoeng ka diode, e hatelletse nako e telele ea ts'ebetso le ts'ebetso e ts'oanang, e bonts'a hore Nd:YAG e loketse lits'ebetso tse hlokang mehloli ea laser e tšoarellang le e tšepahalang. Boithuto bo tlalehile ts'ebetso e atolositsoeng e nang le lithunya tse fetang 4.8 x 10 ^ 9 ntle le tšenyo ea optical, ho boloka boleng bo botle ba mabone (Coyle et al., 2004).
4.Ts'ebetso e Tsoelang Pele ea Leqhubu la 4.Haholo:Liphuputso li bonts'itse ts'ebetso e ntle haholo ea continuous-wave (CW) ea li-lasers tsa Nd:YAG, tse totobatsang ts'ebetso ea tsona e le mokhoa oa ho fumana litsamaiso tsa laser tse pumped diode. Sena se kenyelletsa ho fihlela katleho e phahameng ea phetoho ea optical le ho sebetsa hantle ha matsoapo, ho fana ka bopaki bo eketsehileng ba ho tšoaneleha ha Nd: YAG bakeng sa lisebelisoa tse phahameng tsa laser (Zhu et al., 2013).

Motsoako oa ts'ebetso e phahameng, tlhahiso ea matla, ho feto-fetoha ha ts'ebetso, ho ts'epahala, ho phela nako e telele, le boleng ba boleng bo holimo bo etsa hore Nd: YAG e be mokhoa o ratoang oa ho fumana li-module tsa laser tsa semiconductor-pumped bakeng sa lits'ebetso tse fapaneng.

Referense

Chang, Y., Su, K., Chang, H., & Chen, Y. (2009). Laser e sireletsehileng ea mahlo e sebetsang hantle ea Q-switched ho 1525 nm e nang le Nd: YVO4 kristale e nang le "self-Raman medium". Optics Express, 17 (6), 4330-4335.

Gong, G., Chen, Y., Lin, Y., Huang, J., Gong, X., Luo, Z., & Huang, Y. (2016). Keketseho le litšobotsi tsa spectroscopic tsa Er:Yb:KGd(PO3)_4 kristale e le mokhoa o tšepisang oa 155 µm laser gain medium. Optical Materials Express, 6, 3518-3526.

Vysokikh, DK, Bazakutsa, A., Dorofeenko, AV, & Butov, O. (2023). Moetso o ipapisitseng le liteko oa Er/Yb o fumana mahareng bakeng sa liamplifiers tsa fiber le lasers. Journal of the Optical Society of America B.

Lera, R., Valle-Brozas, F., Torres-Peiró, S., Ruiz-de-la-Cruz, A., Galán, M., Bellido, P., Seimetz, M., Benlloch, J., & Roso, L. (2016). Lipapiso tsa boemo ba phaello le ts'ebetso ea laser ea QCW Nd:YAG e pompetsoeng ka lehlakoreng la diode. Lisebelisoa tsa Optics, 55 (33), 9573-9576.

Zhang, H., Chen, X., Wang, Q., Zhang, X., Chang, J., Gao, L., Shen, H., Cong, Z., Liu, Z., Tao, X., & Li, P. (2013). Ho sebetsa hantle haholo Nd: YAG ceramic eye-safe laser laser e sebetsang ho 1442.8 nm. Mangolo a Optics, 38 (16), 3075-3077.

Coyle, DB, Kay, R., Stysley, P., & Poulios, D. (2004). Laser e sebetsang hantle, e ka tšeptjoang, ea nako e telele, ea diode-pumped Nd:YAG bakeng sa altimetry ea tikoloho ea limela e thehiloeng sebakeng. Lisebelisoa tsa Optics, 43 (27), 5236-5242.

Zhu, HY, Xu, CW, Zhang, J., Tang, D., Luo, D., & Duan, Y. (2013). Li-laser tsa ceramic tse sebetsang hantle haholo tse tsoelang pele Nd:YAG ho 946 nm. Litlhaku tsa Fisiks tsa Laser, 10.

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