A. Umqondo wama-laser asheshayo
Ama-laser asheshayo ngokuvamile abhekisela kuma-lases akhiyiwe emodi esetshenziselwa ukukhipha ama-pulses amafushane kakhulu, isibonelo, ama-pulses we-femtosecond noma ubude be-piccosecond.Igama elinembe kakhudlwana kungaba i-ultrashort pulse laser.Amalaser e-Ultrashort pulse cishe ama-laser akhiywe ngemodi, kodwa umphumela wokushintsha inzuzo nawo ungakhiqiza ama-ultrashort pulses.
B. Uhlobo lwe-laser esheshayo
1. Amalaser e-Ti-sapphire, ngokuvamile imodi ye-Kerr lens ekhiywayo, angakhiqiza ama-pulses amafushane acishe abe ngu-5 fs ubude.Amandla abo okukhiphayo amaphakathi ngokuvamile ama-milliwatts angamakhulu ambalwa, anamazinga okuphindaphinda kwe-pulse, yithi, 80MHz namashumi ama-femtoseconds noma ngaphansi, kanye nobude be-pulse amashumi ama-femtoseconds noma ngaphansi, okuholela emandleni aphezulu kakhulu.Kodwa amalaser e-titanium-sapphire adinga ukukhanya okumpompa kwamanye amalaser anokukhanya okuluhlaza, okuwenza abe yinkimbinkimbi futhi abize kakhulu.
2. Kunama-laser ahlukahlukene apuntshwa nge-diode asekelwe, ngokwesibonelo, i-ytterbium-doped (ikristalu noma ingilazi) noma amakristalu e-laser ane-chromium, ngokuvamile asebenzisa i-SESAM passive mode-locking.Nakuba ubude be-pulse bama-laser adonswa nge-diode bungebufishane njengobude be-pulse be-laser ye-titanium-sapphire, ama-laser adonswa nge-diode angamboza isifunda sepharamitha ebanzi mayelana nobude be-pulse, izinga lokuphindaphinda ukushaya kwenhliziyo, namandla amaphakathi (bona ngezansi) .
3. Ama-fiber lasers asuselwe kumafayibha engilazi ahlanganiswe nezinto ezingavamile zomhlaba nawo angase akhiywe ngendlela engenzi lutho, isibonelo, kusetshenziswa ukuzungezisa kwe-polarization okungaqondile noma i-SESAM.Akhawulelwe kakhulu kunama-laser ayinqwaba ngokwamandla amaphakathi, ikakhulukazi amandla aphezulu, kodwa angahlanganiswa kalula nama-fiber amplifiers.I-athikili yama-laser e-fiber ekhiyiwe inika imininingwane eyengeziwe.
(4) amalaser e-diode akhiywe ngemodi angaba yimishini ebalulekile noma amalaser e-diode angaphandle, futhi angaba asebenzayo, angenzi lutho noma akhiywe imodi exubile.Ngokuvamile, amalaser e-diode akhiywe ngemodi asebenza ngenani eliphezulu (ama-megahertz ayizinkulungwane ezimbalwa) wokuphindaphinda kokushaya ngamandla aphakathi nendawo.
Ama-laser oscillator asheshayo angaba yingxenye yamasistimu e-laser asheshayo, angaphinda ahlanganise isikhulisamazwi esisheshayo (njenge-fiber optic amplifier) ukukhulisa amandla aphezulu namandla okukhiphayo amaphakathi.
Isikhathi sokuthumela: Jun-20-2023