Ingolise ho Mecha ea rona ea Sechaba bakeng sa Post e Potlakileng
Li-Lasers, lejoe la motheo la theknoloji ea morao-rao, li tsoteha joalokaha li rarahane.Ka pelong ea tsona ho na le motsoako oa likaroloana tse sebetsang hammoho ho hlahisa leseli le momahaneng le le phahamisitsoeng.Blog ena e shebisisa ho rarahana ha likarolo tsena, e tšehetsoeng ke melao-motheo ea saense le lipalo, ho fana ka kutloisiso e tebileng ea theknoloji ea laser.
Litlhaloso tse Tsoetseng Pele ho Likaroloana tsa Tsamaiso ea Laser: Pono ea Teknoloji bakeng sa Litsebi
| Karolo | Mosebetsi | Mehlala |
| Fumana Mahareng | The gain medium ke thepa e ka laser e sebelisetsoang ho holisa leseli.E thusa ho holisa leseli ka mokhoa oa ho fetoha ha baahi le ho tsoa ha moea.Khetho ea mokhoa oa ho fumana o khetholla litšobotsi tsa mahlaseli a laser. | Li-Laser tsa Naha tse Tiileng: mohlala, Nd: YAG (Neodymium-doped Yttrium Aluminium Garnet), e sebelisoang lits'ebetsong tsa bongaka le tsa indasteri.Li-laser tsa khase: mohlala, li-lasers tsa CO2, tse sebelisetsoang ho itšeha le ho cheselletsa.Li-laser tsa semiconductor:mohlala, li-laser diode, tse sebelisoang puisanong ea fiber optics le lisebelisoa tsa laser. |
| Mohloli oa Pompo | Mohloli oa ho pompa o fana ka matla ho mokhoa oa ho fumana matla ho fihlela phetoho ea baahi (mohloli oa matla bakeng sa phetoho ea baahi), e nolofalletsang ts'ebetso ea laser. | Optical Pumping: Ho sebelisa mehloli ea leseli e matla joalo ka mabone ho pompa lilase tsa boemo bo tiileng.Motlakase Pumping: Ho thabisa khase ka lasers ea khase ka motlakase oa motlakase.Semiconductor Pumping: Ho sebelisa li-laser diode ho pompa setsi sa laser se tiileng. |
| Sebaka sa Optical | The optical cavity, e nang le liipone tse peli, e bonahatsa leseli ho eketsa bolelele ba tsela ea leseli sebakeng sa phaello, kahoo e matlafatsa matla a khanya.E fana ka mokhoa oa ho fana ka maikutlo bakeng sa amplification ea laser, ho khetha litšobotsi tsa spectral le sebaka sa leseli. | Planar-Planar Cavity: E sebelisoa lipatlisisong tsa laboratori, sebopeho se bonolo.Planar-Concave Cavity: E tloaelehileng ho li-lasers tsa indasteri, e fana ka maballo a boleng bo phahameng. Ring Cavity: E sebelisoa ka meralo e ikhethileng ea li-lasers tsa selikalikoe, joalo ka lilase tsa khase e llang. |
The Gain Medium: A Nexus ea Quantum Mechanics le Optical Engineering
Quantum Dynamics ho Gain Medium
Mokhoa oa ho fumana ke moo ts'ebetso ea mantlha ea ho holisa leseli e etsahalang, ketsahalo e tebileng haholo ho mechanics ea quantum.Tšebelisano pakeng tsa matla a matla le likaroloana tse ka hare ho sebaka se laoloang ke melao-motheo ea tlhahiso e tsosolositsoeng le ho fetoha ha baahi.Kamano e mahlonoko pakeng tsa matla a leseli (I), matla a pele (I0), transition cross-section (σ21), le linomoro tsa likaroloana maemong a mabeli a matla (N2 le N1) li hlalosoa ke equation I = I0e ^ (σ21(N2-N1)L).Ho fihlella phetoho ea baahi, moo N2 > N1, e leng bohlokoa bakeng sa ho holisa 'me ke lejoe la motheo la laser physics[1].
Maemo a mararo vs. Four-Level Systems
Meralong e sebetsang ea laser, hangata ho sebelisoa litsamaiso tsa maemo a mararo le a mane.Litsamaiso tsa maemo a mararo, leha li le bonolo, li hloka matla a mangata ho fihlela phetoho ea baahi kaha boemo bo tlase ba laser ke boemo ba fatše.Ka lehlakoreng le leng, litsamaiso tsa mekhahlelo e mene li fana ka tsela e atlehang haholoanyane ea ho feto-fetoha ha baahi ka lebaka la ho bola ho se nang mahlaseli a kotsi ka potlako ho tloha boemong bo phahameng ba matla, e leng se etsang hore li ate haholoanyane lits'ebetsong tsa sejoale-joale tsa laser[2].
Is Khalase e entsoeng ka Erbiummokhoa oa ho fumana chelete?
Ee, khalase e entsoeng ka erbium ehlile ke mofuta oa mokhoa oa ho fumana chelete o sebelisoang litsing tsa laser.Moelelong ona, "doping" e bolela mokhoa oa ho eketsa palo e itseng ea li-ion tsa erbium (Er³⁺) khalase.Erbium ke ntho e sa tloaelehang ea lefats'e eo, ha e kenyelelitsoe mocheng oa likhalase, e ka holisang khanya ka mokhoa o ts'oanelang, e leng ts'ebetso ea mantlha ts'ebetsong ea laser.
Khalase e entsoeng ka Erbium e bohlokoa haholo ts'ebelisong ea eona ho li-laser tsa fiber le li-amplifiers tsa fiber, haholo indastering ea likhokahano.E loketse hantle lits'ebetsong tsena hobane e holisa khanya ka mokhoa o nepahetseng ho bophahamo ba maqhubu a pota-potileng 1550 nm, e leng sebaka sa bohlokoa sa maqhubu a puisano a fiber optical ka lebaka la tahlehelo e tlase ea likhoele tse tloaelehileng tsa silica.
Theerbiumli-ion li monya leseli la pompo (hangata ho tsoa ho alaser diode) 'me ba thabetse libaka tse phahameng tsa matla.Ha li khutlela boemong bo tlaase ba matla, li ntša li-photon ho lasing wavelength, e leng se tlatsetsang tšebetsong ea laser.Sena se etsa hore khalase e entsoeng ka erbium e be mokhoa o atlehang le o sebelisoang haholo meralong e fapaneng ea laser le amplifier.
Li-Blog tse Amanang: Litaba - Khalase ea Erbium-Doped: Saense & Likopo
Mekhoa ea ho Pompa: Matla a ho Khanna ka Morao ho Laser
Mekhoa e fapaneng ea ho Finyella Phetoho ea Baahi
Khetho ea mochini oa ho pompa e bohlokoa molemong oa moralo oa laser, o susumetsa ntho e ngoe le e ngoe ho tloha ho ts'ebetso ho isa ho bophahamo ba maqhubu.Optical pumping, ho sebelisa mehloli ea leseli e kantle joalo ka mabone kapa lisebelisoa tse ling tsa laser, ho tloaelehile ho li-laser tsa solid-state le dae.Mekhoa ea ho ntša motlakase hangata e sebelisoa ho li-laser tsa khase, ha li-laser tsa semiconductor hangata li sebelisa ente ea elektronike.Ho sebetsa hantle ha mekhoa ena ea ho pompa, haholo-holo ka diode-pumped solid-state lasers, e bile taba ea bohlokoa lipatlisisong tsa morao-rao, tse fanang ka ts'ebetso e phahameng le ho sebetsa ka thata haholoanyane[3].
Litlhaloso tsa Theknoloji ka Bokhoni ba ho Pumping
Bokhoni ba ts'ebetso ea ho pompa ke karolo ea bohlokoa ea moralo oa laser, e amang ts'ebetso ka kakaretso le ho nepahala ha ts'ebeliso.Ho li-laser tsa boemo bo tiileng, khetho pakeng tsa mabone le li-laser diode e le mohloli oa pompo e ka ama haholo ts'ebetso ea sistimi, mojaro oa mocheso, le boleng ba maballo.Nts'etsopele ea li-laser diode tsa matla a holimo, tse sebetsang hantle haholo li fetotse litsamaiso tsa laser tsa DPSS, tse nolofalitseng meralo e kopaneng le e sebetsang hantle haholoanyane[4].
The Optical Cavity: Boenjiniere ba Beam ea Laser
Moqapi oa Cavity: Molao oa Ho leka-lekanya oa Fisiks le Boenjiniere
Sebaka sa mahlo, kapa resonator, ha se karoloana feela empa ke karolo ea mafolofolo ho bopeng lebone la laser.Moralo oa sekoti, ho kenyelletsa le ho kobeha le ho tsamaisana ha liipone, o bapala karolo ea bohlokoa ho khethollang botsitso, sebopeho sa mokhoa le tlhahiso ea laser.Sekoti se tlameha ho etsoa ho ntlafatsa phaello ea mahlo ha se ntse se fokotsa tahlehelo, phephetso e kopanyang boenjiniere ba optical le wave optics.5.
Maemo a Oscillation le Khetho ea Mokhoa
Hore oscillation ea laser e etsahale, phaello e fanoeng ke seaplane e tlameha ho feta tahlehelo e ka hare ho cavity.Boemo bona, hammoho le tlhokahalo ea ho lumellana ha maqhubu a holimo, bo laela hore ho tšehetsoe mekhoa e itseng feela ea longitudinal.Sebaka sa sebaka le sebopeho sa kakaretso se susumetsoa ke bolelele ba 'mele oa cavity le index ea refractive ea gain medium[6].
Qetello
Moralo le ts'ebetso ea litsamaiso tsa laser li kenyelletsa mefuta e mengata ea melao-motheo ea fisiks le ea boenjiniere.Ho tloha ho quantum mechanics e laolang phaello ho ea ho boenjiniere bo rarahaneng ba optical cavity, karolo e 'ngoe le e' ngoe ea tsamaiso ea laser e bapala karolo ea bohlokoa mosebetsing oa eona ka kakaretso.Sengoliloeng sena se fane ka leseli la lefats'e le rarahaneng la thekenoloji ea laser, se fanang ka lintlha tse lumellanang le kutloisiso e tsoetseng pele ea liprofesa le lienjiniere tsa optical lebaleng.
Litšupiso
- 1. Siegman, AE (1986).Li-laser.Libuka tsa Saense tsa Univesithi.
- 2. Svelto, O. (2010).Melao-motheo ea Lasers.Springer.
- 3. Koechner, W. (2006).Boenjiniere ba Laser ea Naha e tiileng.Springer.
- 4. Piper, JA, & Mildren, RP (2014).Diode Pumped Solid State Lasers.Bukeng ea Handbook ea Laser Technology le Applications (Vol. III).Khatiso ea CRC.
- 5. Milonni, PW, & Eberly, JH (2010).Fisiks ea Laser.Wiley.
- 6. Silfvast, WT (2004).Lintho tsa motheo tsa Laser.Univesithi ea Cambridge Press.
Nako ea poso: Nov-27-2023