Ukulawula imvamisa ye-Pulseubuchwepheshe be-laser pulse control
1. Umqondo we-Pulse frequency, laser pulse Rate (Pulse Repetition Rate) ubhekisela enanini lama-laser pulses akhishwa ngesikhathi seyunithi ngayinye, ngokuvamile e-Hertz (Hz). Ama-pulses aphezulu afanele ukusetshenziswa kwezinga eliphezulu lokuphindaphinda, kanti ama-low frequency pulse afanele imisebenzi ephezulu yamandla e-pulse eyodwa.
2. Ubudlelwano phakathi kwamandla, ububanzi be-pulse kanye ne-frequency Ngaphambi kokulawulwa kwefrikhwensi ye-laser, ubudlelwano phakathi kwamandla, ububanzi be-pulse kanye nobuningi kufanele kuchazwe kuqala. Kukhona ukusebenzisana okuyinkimbinkimbi phakathi kwamandla e-laser, imvamisa nobubanzi be-pulse, futhi ukulungisa enye yepharamitha ngokuvamile kudinga ukucabangela amanye amapharamitha amabili ukuze kuthuthukiswe umphumela wohlelo.
3. Izindlela ezijwayelekile zokulawula ishayela
a. Imodi yokulawula yangaphandle ilayisha isignali yefrikhwensi ngaphandle kokunikezwa kwamandla, futhi ilungisa imvamisa ye-laser pulse ngokulawula imvamisa nomsebenzi wesiginali yokulayisha. Lokhu kuvumela i-pulse ephumayo ukuthi ivunyelaniswe nesiginali yokulayisha, iyenze ifanele izinhlelo zokusebenza ezidinga ukulawula okunembile.
b. Imodi yokulawula yangaphakathi Isiginali yokulawula imvamisa yakhelwe kugesi wedrayivu, ngaphandle kokufaka isignali eyengeziwe yangaphandle. Abasebenzisi bangakhetha phakathi kwefrikhwensi eyakhelwe ngaphakathi engaguquki noma ifrikhwensi yokulawula yangaphakathi elungisekayo ukuze kube nokuguquguquka okukhulu.
c. Ukulungisa ubude be-resonator nomai-electro-optical moduleIzici zemvamisa ye-laser zingashintshwa ngokulungisa ubude be-resonator noma kusetshenziswa i-electro-optical modulator. Le ndlela yokulawula imvamisa ephezulu ivamise ukusetshenziswa ezinhlelweni ezidinga amandla amaphakathi aphezulu kanye nobubanzi be-pulse obufushane, njenge-laser micromachining kanye ne-imaging yezokwelapha.
d. I-Acousto optic Modulator(I-AOM Modulator) iyithuluzi elibalulekile lokulawula imvamisa yokushaya kwe-laser pulse control technology.I-AOM Modulatorisebenzisa umphumela we-acousto optic (okungukuthi, ingcindezi ye-oscillation yemishini yegagasi lomsindo ishintsha inkomba ye-refractive) ukulungisa nokulawula i-laser beam.
4. Ubuchwepheshe bokushintshwa kwe-Intracavity, uma kuqhathaniswa nokuguquguquka kwangaphandle, ukuguqulwa kwe-intracavity kungakwazi ukukhiqiza amandla aphezulu ngokuphumelelayo, amandla aphezului-pulse laser. Okulandelayo izindlela ezine ezijwayelekile zokumodulation ze-intracavity:
a. Ukuzuza Ukushintsha ngokushintsha ngokushesha umthombo wephampu, ukuguquguquka kwenombolo yezinhlayiyana ezimaphakathi kanye ne-coefficient yenzuzo kumiswa ngokushesha, kweqa izinga lemisebe elivuselelwe, okuholela ekwenyukeni okubukhali kwama-photon emgodini kanye nokukhiqizwa kwe-short pulse laser. Le ndlela ivame kakhulu kuma-lases semiconductor, angakhiqiza ama-pulses kusuka ku-nanoseconds kuya emashumini ama-picoseconds, ngezinga lokuphindaphinda lama-gigahertz amaningana, futhi isetshenziswa kabanzi emkhakheni wokuxhumana optical namazinga aphezulu okudlulisa idatha.
Iswishi ye-Q (ukushintsha i-Q) Amaswishi e-Q acindezela impendulo yokubona ngokwethula ukulahlekelwa okukhulu endaweni ye-laser, okuvumela inqubo yokumpompa ukuthi ikhiqize ukuhlehla kwezinhlayiyana zenani elingaphezu komkhawulo, igcine inani elikhulu lamandla. Kamuva, ukulahlekelwa emgodini kunciphisa ngokushesha (okungukuthi, inani le-Q le-cavity likhuphuka), futhi impendulo ye-optical ivuliwe futhi, ukuze amandla agciniwe akhululwe ngendlela ye-ultra-short high-intensity pulses.
c. Ukukhiya Imodi kudala ama-pulses amafushane kakhulu weleveli ye-picosecond noma ye-femtosecond ngokulawula ubudlelwano besigaba phakathi kwezindlela ezihlukene ze-longitudinal ku-cavity ye-laser. Ubuchwepheshe bokukhiya i-mode-locking ihlukaniswe yaba yi-passive mode-locking kanye ne-active mode-locking.
d. I-Cavity Dumping Ngokugcina amandla kuma-photon ku-resonator, usebenzisa isibuko se-cavity esilahlekelwa kancane ukuze ubophe ngempumelelo ama-photon, ukugcina isimo sokulahlekelwa okuphansi emgodini isikhathi esithile. Ngemva komjikelezo owodwa wohambo lokuya nokubuya, ukushaya kwenhliziyo okuqinile “kulahlwa” ngaphandle komgodi ngokushintsha ngokushesha ingxenye yangaphakathi yomgodi, njengemoduli ye-acousto-optic noma i-electro-optic shutter, bese kukhishwa i-pulse laser emfushane. Uma kuqhathaniswa nokushintsha kwe-Q, ukukhipha i-cavity kungagcina ububanzi be-pulse yama-nanoseconds ambalwa ngezinga eliphezulu lokuphindaphinda (njengama-megahertz ambalwa) futhi kuvumela amandla aphezulu okushaya kwenhliziyo, ikakhulukazi izinhlelo zokusebenza ezidinga amazinga aphezulu okuphindaphinda kanye nama-pulses amafushane. Ehlanganiswe namanye amasu okukhiqiza ukushaya kwenhliziyo, amandla okushaya kwenhliziyo angathuthukiswa nakakhulu.
Ukulawula i-Pulse yelaserkuyinqubo eyinkimbinkimbi futhi ebalulekile, ebandakanya ukulawula ububanzi be-pulse, ukulawulwa kwe-pulse frequency kanye namasu amaningi okushintshashintsha. Ngokukhetha okunengqondo nokusebenzisa lezi zindlela, ukusebenza kwe-laser kungalungiswa ngokunembile ukuze kuhlangatshezwane nezidingo zezimo zohlelo lokusebenza ezahlukene. Ngokuzayo, ngokuvela okuqhubekayo kwezinto ezintsha kanye nobuchwepheshe obusha, ubuchwepheshe bokulawula ukushaya kwenhliziyo kwama-lasers buzoletha impumelelo eyengeziwe, futhi bukhuthaze ukuthuthukiswaubuchwepheshe be-laserekuqondeni kokunemba okuphezulu nokusebenzisa okubanzi.
Isikhathi sokuthumela: Mar-25-2025