Izinhlobo ze-laser elungisekayo

Izinhlobo zei-laser elungisekayo

Ukusetshenziswa kwama-laser alungisekayo ngokuvamile kungahlukaniswa ngezigaba ezimbili ezinkulu: esinye yilapho ama-laser angama-single-line noma ama-multi-line fixed-wavelength engakwazi ukunikeza ubude obudingekayo obubodwa noma ngaphezulu obuhlukile; Esinye isigaba sihilela izimo laphoi-laserubude be-wavelength kumele buhlale bulungiswa ngesikhathi sokuhlolwa noma ukuhlolwa, njenge-spectroscopy kanye nokuhlolwa kokuthola iphampu.

Izinhlobo eziningi zama-laser alungisekayo zingakhiqiza ama-wave aqhubekayo alungisekayo (CW), ama-nanosecond, ama-picosecond noma ama-femtosecond pulse outputs. Izici zawo zokukhipha zinqunywa yindlela yokuzuza i-laser esetshenziswayo. Imfuneko eyisisekelo yama-laser alungisekayo ukuthi angakhipha ama-laser ebangeni elibanzi lama-wavelength. Izingxenye ezikhethekile ze-optical zingasetshenziswa ukukhetha ama-wavelength athile noma ama-wavelength band kusuka kuma-emission band e-ama-laser alungisekayoLapha sizokwethula ama-laser amaningana avamile alungisekayo kuwe

I-laser yamagagasi emile ye-CW elungisekayo

Ngomqondo, iI-laser ye-CW elungisekayoukwakheka kwe-laser okulula kakhulu. Le laser ifaka isibuko esibonakalisa ukukhanya okuphezulu, i-gain medium kanye nesibuko sokuxhumanisa okukhiphayo (bheka Umfanekiso 1), futhi inganikeza okukhiphayo kwe-CW kusetshenziswa imidiya ehlukahlukene ye-laser gain. Ukuze kufezwe ukulungiswa, i-gain medium engamboza ububanzi bobude be-wavelength obuqondiwe idinga ukukhethwa.

2. I-laser yendandatho ye-CW elungisekayo

Ama-laser endandatho asetshenziswe isikhathi eside ukufeza umkhiqizo we-CW olungisekayo ngemodi eyodwa ye-longitudinal, ene-bandwidth ye-spectral kububanzi be-kilohertz. Njengama-laser amagagasi amile, ama-laser endandatho anolungisekayo angasebenzisa futhi amadayi kanye ne-titanium sapphire njenge-gain media. Amadayi anganikeza ububanzi bomugqa obuncane kakhulu obungaphansi kwe-100 kHz, kuyilapho i-titanium sapphire inikeza ububanzi bomugqa obungaphansi kwe-30 kHz. Ububanzi bokulungiselelwa kwe-laser yedayi bungu-550 kuya ku-760 nm, kanti obo be-titanium sapphire laser bungu-680 kuya ku-1035 nm. Imiphumela yazo zombili izinhlobo zama-laser ingaphindaphindwa imvamisa ku-UV band.

3. I-laser ekhiywe ngendlela ecishe iqhubeke

Eziningi izinhlelo zokusebenza, ukuchaza ngokunembile izici zesikhathi zokukhishwa kwe-laser kubaluleke kakhulu kunokuchaza ngokunembile amandla. Eqinisweni, ukufeza ama-pulse amafushane e-optical kudinga ukucushwa kwe-cavity enezindlela eziningi ze-longitudinal eziphendula ngesikhathi esisodwa. Uma lezi zindlela ze-longitudinal ezijikelezayo zinobudlelwano besigaba esinqunyiwe ngaphakathi kwe-laser cavity, i-laser izokhiywa ngemodi. Lokhu kuzokwenza i-pulse eyodwa ikwazi ukuzulazula ngaphakathi kwe-cavity, isikhathi sayo sichazwa ubude be-laser cavity. I-Active mode-locking ingatholakala kusetshenziswa i-i-modulator ye-acousto-optic(AOM), noma i-passive mode-locking ingabonakala ngelensi ye-Kerr.

4. I-Ultrafast ytterbium laser

Nakuba ama-laser e-titanium sapphire ewusizo olubanzi, ezinye izivivinyo ze-biographical imaging zidinga ubude be-wavelength. Inqubo evamile yokumunca ama-photon amabili ivuselelwa ama-photon anobude be-wavelength obungu-900 nm. Ngenxa yokuthi ubude be-wavelength busho ukuhlakazeka okuncane, ubude be-wavelengths obude bokuvusa bungenza ngcono izivivinyo ze-biologic ezidinga ukujula kwe-imaging okujulile.

Kulezi zinsuku, ama-laser alungisekayo asetshenziswe emikhakheni eminingi ebalulekile, kusukela ocwaningweni lwesayensi oluyisisekelo kuya ekukhiqizweni kwe-laser kanye nesayensi yezempilo neyokuphila. Uhla lobuchwepheshe olutholakalayo njengamanje lubanzi kakhulu, luqala ezinhlelweni ezilula ze-CW ezilungisekayo, ezinobubanzi obuncane obungasetshenziswa kwi-spectroscopy enesisombululo esiphezulu, ukubanjwa kwama-molecular kanye nama-athomu, kanye nokuhlolwa kwe-quantum optics, okunikeza ulwazi olubalulekile kubacwaningi banamuhla. Abakhiqizi be-laser banamuhla banikeza izixazululo ze-one-stop, banikeza ukuphuma kwe-laser okungaphezu kwama-300 nm ngaphakathi kohla lwamandla we-nanojoule. Izinhlelo eziyinkimbinkimbi kakhulu zithatha uhla oluhlaba umxhwele lwe-spectral olubanzi oluyi-200 kuya ku-20,000 nm kuhla lwamandla we-microjoule kanye ne-millijoule.