Sau npe yuav ua rau peb social media rau cov lus qhia sai
Lasers, lub pobzeb ntawm cov thev naus laus zis tshiab, yog qhov txaus nyiam thaum lawv nyuaj siab. Ntawm lawv lub siab nyob ntawm lub rooj zaum ntawm cov khoom ua haujlwm hauv kev sib koom ua ke tsim cov kev sib koom ua ke, lub teeb ci ntsa iab. Cov blog no rho tawm rau hauv cov lus sib xyaw ntawm cov khoom siv no, txhawb los ntawm cov ntsiab cai scientific thiab kev sib txig sib luag, los muab kev nkag siab tob ntawm laser.
Cov kev pom zoo ua laser system: kev xav ua haujlwm rau cov tub txawg
| Ib feem | Rooj mov | Piv txwv |
| Tau Txais Nruab Nrab | Qhov nce ntawm nruab nrab yog cov khoom siv hauv ib lub laser siv rau lub teeb pom kev zoo. Nws pab txhawb kev teeb pom kev zoo los ntawm cov txheej txheem ntawm cov pej xeem inversion thiab stimulated emissionated. The choice of gain medium determines the laser's radiation characteristics. | Khoom-Lub Xeev Lasers: Xws li, ND: YAG (Neodymium-doped yttrium aluminium garnet), siv hauv kev kho mob thiab cov ntawv thov kev kho mob.Cov roj av roj: Xws li, Co2 lasers, siv rau kev txiav thiab vuam.Lasmicoductor lasers:Piv txwv li, laser diodes, siv rau kev sib txuas lus fiber ntau thiab laser cov ntsiab lus. |
| Tso khoom | Qhov chaw twj tso hluav taws xob muab lub zog rau cov pejxeem cov pejxeem inversion (lub zog hluav taws xob rau cov pej xeem kev ua haujlwm), ua haujlwm laser. | Kho Dua Qhov Muag: Siv lub teeb pom kev zoo zoo li flashlamps kom nqus cov roj ntsha kom cov roj ntsha kom ruaj khov.Hluav Taws Xob Hluav Taws Xob: Txaus siab rau cov roj hauv cov roj hauv roj los ntawm cov hluav taws xob tam sim no.Liamondheructor Tso twj: Siv laser dodes kom nqus tau cov khoom siv-xeev laser nruab nrab. |
| Kho Dua Hniav | Lub cev hloov kho kho qhov muag, muaj ntawm ob tsom iav, xav txog txoj kev ntev ntawm lub teeb ntev ntawm lub teeb ntev ntawm lub teeb pom kev zoo, yog li txhim kho lub teeb ci. Nws muab cov lus qhia me me rau cov tswv yim ua laser, xaiv cov yam ntxwv spectral thiab spatial ntawm lub teeb. | Planar-planar kab noj hniav: Siv hauv kev kuaj tshawb nrhiav, cov qauv yooj yim.Planar-concacave kab noj hniav: Ntau yam hauv kev lag luam lasers, muab cov teeb zoo tshaj plaws. Lub nplhaib kab noj hniav: Siv rau hauv kev tsim tshwj xeeb ntawm lub nplhaib lasers, zoo li lub nplhaib roj av. |
Qhov nce nruab nrab: ib Nexus ntawm quantum mechanics thiab entrical engineering
Quantum Dynamics nyob rau hauv cov nyiaj nruab nrab
Qhov nce hauv nruab nrab yog qhov chaw ua haujlwm ntawm cov teeb pom kev zoo tshwm sim, ib qho tshwm sim tob tob los, cov txiaj ntsig tob hauv cov noob me me. Qhov kev sib cuam tshuam ntawm lub zog xeev thiab hais nyob rau hauv nruab nrab yog tswj hwm los ntawm cov ntsiab cai ntawm kev txhawb nqa thiab cov pej xeem inversion. Qhov kev sib raug zoo ntawm lub teeb siv (i), kev siv thawj zaug (N2), thiab N1) tau piav qhia los ntawm kab zauv uas tau piav qhia los ntawm kab zauv Kuv = i0e ^ (O2-N1) l). Ua tiav cov pej xeem inversion, qhov twg n2> n1, yog qhov tseem ceeb rau kev ua kom nrov dua thiab yog lub pob zeb ntawm laser physics [1].
Peb-theem vs. plaub-qib-qib
Nyob rau hauv cov tswv yim laser tsim, peb-theem thiab plaub-qib-qib ua haujlwm ib txwm ua. Peb-qib system, thaum yooj yim dua, xav tau ntau lub zog kom ua tiav cov pejxeem inversion li qib laser theem yog hauv av hauv lub xeev. Muaj plaub-qib system, ntawm qhov tod tes, muab txoj hauv kev tsis zoo ntxiv vim yog cov kev siv hluav taws xob ntau dua los ntawm cov kev siv nyiaj siab dua, ua rau lawv muaj ntau ntxiv hauv cov ntawv thov laser niaj hnub [2].
Is Erbium-doped iavIb qho nyiaj nruab nrab?
Yog lawm, erbium-doped iav yog tseeb ib hom kev nce nruab nrab siv hauv laser tshuab. Hauv cov ntsiab lus no, "doping" yog hais txog cov txheej txheem ntawm kev ntxiv qee qhov nyiaj ntawm erbium ions (er³n) rau lub khob. Ebium yog lub ntiaj teb tsis tshua muaj neeg uas, thaum incorporated rau hauv lub iav tswv, tuaj yeem ua kom pom tseeb lub teeb los ntawm kev tawm tswv yim, ua haujlwm hauv txoj haujlwm laser.
Erbium-doped iav yog siv tau tshwj xeeb rau nws siv hauv fiber ntau thiab fiber ntau tshaj plaws, tshwj xeeb hauv kev lag luam hauv xov tooj. Nws yog qhov zoo rau cov ntawv thov no vim tias lub teeb pom kev zoo nyob ib ncig ntawm 1550 nm, uas yog ib qho tseem ceeb wavelength rau lub optical fiber ntau yam vim nws poob qis hauv cov qauv silica fibers.
Tushoob laugions nqus twj tso kua mis teeb (feem ntau los ntawm aLaser Diode) Thiab zoo siab rau lub zog siab dua. Thaum lawv rov qab mus rau lub xeev qis dua, lawv emit photons ntawm txoj kev ncig ua si, pab txhawb nqa txheej txheem lash. Qhov no ua rau erbium-doped iav qhov ua tau zoo thiab dav siv nce ntxiv qhov nruab nrab hauv ntau laser thiab amplififier tsim.
Lwm yam blogs: Xov Xwm - Erbium-doped iav: Kev Tshawb Fawb & Kev Siv
Tso tawm cov mechanism: lub zog tsav tsheb tom qab lasers
Cov Qauv Ua Kom Zoo Los Ua Pej Xeem Inversion
Qhov kev xaiv ntawm cov nqus nqus mechanism yog cov pivotal hauv laser tsim, muaj kev cuam tshuam txhua yam ntawm kev ua kom tau wavelength. Siv cov twj tso kua mis tawm, siv cov teeb pom kev sab nraud xws li flashlamps lossis lwm cov lasers, muaj ntau hauv cov thoob-xeev thiab zas xim. Cov txheej txheem hluav taws xob tawm hluav taws xob feem ntau yog ua haujlwm hauv cov roj av, thaum lub sijhawm sandiconductor ntau zaus siv cov kev txhaj hluav taws xob feem ntau siv kev txhaj tshuaj hluav taws xob feem ntau siv kev txhaj tshuaj hluav taws xob feem ntau siv kev txhaj tshuaj hluav taws xob feem ntau siv kev txhaj tshuaj hluav taws xob feem ntau siv kev txhaj tshuaj hluav taws xob feem ntau siv kev txhaj tshuaj electrod. Kev ua tau zoo ntawm cov txheej txheem twj tso kua mis no, tshwj xeeb tshaj plaws nyob rau hauv diode-compress, tau muaj kev tshawb fawb tseem ceeb ntawm kev tshawb fawb tsis ntev los no, muab kev ua haujlwm siab dua thiab kev cog lus siab dua [3].
Kev txiav txim siab cov txuj ci hauv kev nqus
Kev ua tau zoo ntawm cov txheej txheem nqus mis yog qhov tseem ceeb ntawm cov qauv tsim kho laser, cuam tshuam tag nrho kev ua tau zoo thiab kev siv tag nrho. Hauv kev siv-lub xeev lasers, kev xaiv ntawm flashpanps thiab laser diodes ua rau lub cev muaj peev xwm cuam tshuam ntau yam, thermal nra, thiab nqaj zoo. Kev txhim kho ntawm high-zog, high-effectievievievieviciency tau hloov kho dpss laser laser laser laser, ua kom muaj kev tsim kho ntau dua thiab txuag ntau dua [4].
Lub qhov muag kho qhov muag: Engineering cov nqaj laser
CARITY DESITER: kev sib npaug ntawm lub cev thiab engineering
Lub cev kho qhov noj kab noj hniav, lossis resonator, tsis yog tsuas yog ib feem passive feem tab sis tus neeg koom ua ke koom tes hauv shaer nqaj. Tus tsim ntawm cov kab noj hniav, suav nrog kev nkhaus thiab cov duab kos duab, ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab ruaj khov, hom qauv ntawm laser. Cov kab noj hniav yuav tsum tau tsim los txhim kho qhov kev kho kho qhov muag thaum muaj kev poob qis, kev sib tw uas ua ke kho qhov muag engineering nrog cov tshuaj optics5.
Oscillation tej yam kev mob thiab hom xaiv
Rau laser oscillation tshwm sim, qhov nce tau muab los ntawm nruab nrab yuav tsum tau ntau dua qhov poob rau hauv kab noj hniav. Tus mob no, txuas nrog qhov yuav tsum tau ua rau coherent yoj supererposition, dictates uas tsuas yog muaj qee hom kev ntev yog txaus siab. Cov hom spacing thiab cov qauv txheej txheem tag nrho yog cuam tshuam los ntawm kab noj hniav lub cev ntev thiab lub cev refratart index ntawm qhov tau nruab nrab [6].
Tag
Tus qauv tsim thiab kev ua haujlwm ntawm lub tshuab laser encompass encompass ntau qhov dav ntawm lub cev thiab argine cov ntsiab lus. Los ntawm Quantum Mechanics tswj hwm qhov nce siab rau cov entricate entricate ntawm cov kab noj hniav kho tshiab, txhua feem ntawm ib lub luag hauj lwm tseem ceeb hauv nws cov haujlwm tag nrho. Kab lus no tau muab ib nyuag ntsia rau hauv lub ntiaj teb laser ntawm cov thev naus laus zis, muab cov kev nkag siab zoo ntawm cov kws tshaj lij thiab kho qhov muag hauv thaj chaw.
Ntawv Sawv cev
- 1. Siegman, AE (1986). Lasers. Cov phau ntawv science University.
- 2. Svelto, O. (2010). Cov ntsiab cai ntawm lasers. Springer.
- 3. Keechner, W. (2006). Khoom-lub xeev laser ennerering. Springer.
- 4. Piper, JA, & Mildren, Rp (2014). Diode pumped cov khoom noj khoom haus. Hauv phau ntawv teev phau ntawv ntawm Laser Technology thiab cov ntawv thov (vol. Iii). CRC xovxwm.
- 5. Milonni, PW, & Eberly, JH (2010). Laser physics. Wily.
- 6. Silfvast, wt (2004). Laser. Cambridge University Xovxwm.
Lub sijhawm Post: Nov-27-2023