Kuongorora kwePUDZIDZO LASERS
Nzira yakanyanya kutaurwa yekugadziralaserPulses ndeyekuwedzera modulator kusvika kunze kweiyo inoenderera laser. Iyi nzira inogona kuburitsa iyo inokurumidza picosecond pulse, kunyangwe iri nyore, asi marara mwenje simba uye peak Simba harigone kupfuura rinoenderera mberi simba renje. Naizvozvo, nzira inoshanda kwazvo yekugadzira laser pulses ndeyekunongedza muLaser Cavity, kuunganidza simba panguva yekudzoka kwechitima uye kusunungura panguva yekucheka. Maitiro mana akajairika anoshandiswa kuburitsa pulses kuburikidza ne laser cavity modulation ari kuwana, q-switching (kupererwa), cavity inodurura, uye mode-inovhara.
Iyo yekuwana switch inogadzira pfupi kupururudza nekumhanyisa simba repombi. Semuenzaniso, Semiconductor kuwana-switched lasers inogona kuburitsa mapuranga kubva kune vashoma Nanosevonds kusvika zana picoreconds nekujairwa kwazvino. Kunyangwe simba rekupururudza rakaderera, iyi nzira inoshanduka-shanduka, yakadai sekupa inogadziriswa kudzokorora kudzokorora frequency uye pulse upamhi. Muna 2018, vanotsvaga kuYunivhesiti yeTokyo yakashuma kuti femtosecond gomiconductor Laser, anomiririra breaktrally mugore remakore makumi mana ematehwe.
Nanosecond Nanosecond anowanzogadzirwa neQ-shandurwa lasers, ayo anoburitswa mumatare akati wandei, uye simba rekuputika riri mumari dzinoverengeka kusvika kune dzinoverengeka joules, zvichienderana nehukuru hwehurongwa. SEVIEME Simba (Kazhinji pazasi 1 μj) Picosecond uye femtosecond Pulses anonyanya kugadzirwa nemaitiro-akaiyirwa lasers. Kune imwe kana yakawanda ultrashort pulses mune laser resonator iyo kutenderera ichiramba ichiramba ichiramba. Imwe neimwe intraavity pulse inoburitsa pulse kuburikidza neyekuburitsa magirazi egirazi, uye fani iri pakati pegumi MHZ uye 100 GHZ. Iyo nhamba iri pazasi inoratidza yakajairika kuparadzaniswa (ani) dissipative soliton femtosecondfiber laser mudziyo.
Cavity inodurura maitiro inogona kushandiswaQ-switched lasersKuti uwane ipfupi pulses uye mode-yakakiiwa lasers kuti iwedzerwe kuputika simba nedzikisi kutaurisa.
Time Domain uye Frequency Domain Purses
Iyo linear chimiro chePulse nenguva inowanzo kuve yakanyanya nyore uye inogona kutaurwa neGaussian uye sechɨ mabasa. Pulse nguva (zvakare inozivikanwa sePulse upamhi) inonyanya kutaurwa nehafu yehupamhi (FWHM) kukosha, ndiko kuti, upamhi hwacho hunokosha sei hafu yesimba. Q-shandurwa laser inogadzira nanosecond pfupi pulses kuburikidza
Mode-yakakiiwa lasers inoburitsa Ultra-pfupi pulses (USP) muhurongwa hwemakumi emakumi ecoseconds kune femtoseconds. Yakakwira-yekumhanyisa magetsi inogona kungoyera kusvika pamakumi emakumi ematumba, uye mapfupi emvura anogona chete kuyerwa neyekunyora technologies, frog uye spider. Ipo Nanosecond kana kupfuura pures zvisinganyatso shandura prever yavo yakafara pavanofamba, kunyange pamusoro pematanho marefu, ultra-pfupi-madiki madhirowa anogona kukanganiswa nezvinhu zvakasiyana:
Kupararira kunogona kuguma nekuwedzera kukuru kwehupfumi, asi kunogona kudzoreredzwa nekupararira kwakapesana. Iyo inotevera Diagram inoratidza kuti iyo minzwa femtosecond compressor inopa mari yekuparadzira microscope.
HONELINGER HAPANA ZVINOGONESA ZVINOGONESESA zvakananga nePurse upfu hweshoko, asi zvinowedzera bandwidth, zvichiita kuti pulse ichisungirirwa pakupararira panguva yekupararira. Chero rudzi rwemberi, kusanganisira imwe kuwana media neyakaganhurirwa bandwidth, inogona kukanganisa chimiro chebandwidth kana ultra-pfupi-kupfupika muBandwidth inogona kutungamira kune inowedzera munguva; Kune zvekare zviitiko apo iyo pulse upamhi yeiyo yakanyanya kurira provse inopfupika kana iyo spectrum ichinge yakatetepa.
Kutumira Nguva: Kukadzi-05-2020