Ulawulo lwe-Pulse frequency yetekhnoloji yokulawula ukubetha kwe-laser

Ulawulo lwe-Pulse frequency yeiteknoloji yokulawula i-laser pulse

1. Ingqikelelo yePulse frequency, laser pulse Rate (Pulse Repetition Rate) ibhekisa kwinani le-laser pulses ekhutshwayo ngexesha leyunithi, ngokuqhelekileyo eHertz (Hz). Ii-pulses eziphezulu zefrikhwensi zilungele usetyenziso lwezinga eliphezulu lokuphindaphinda, ngelixa ii-pulse frequency ezisezantsi zilungele imisebenzi ephezulu ye-pulse eyodwa.

2. Ubudlelwane phakathi kwamandla, ububanzi bepulse kunye nobuninzi Ngaphambi kolawulo lwamaza e-laser, ubudlelwane phakathi kwamandla, ububanzi be-pulse kunye nobuninzi kufuneka buchazwe kuqala. Kukho intsebenziswano entsonkothileyo phakathi kwamandla e-laser, i-frequency kunye nobubanzi be-pulse, kunye nokulungelelanisa enye yeeparamitha ngokuqhelekileyo kufuna ukuba kuthathelwe ingqalelo ezinye iiparamitha ezimbini zokwandisa umphumo wesicelo.

3. Iindlela eziqhelekileyo zokulawula i-pulse frequency

a. Imowudi yokulawula yangaphandle ilayisha isignali yefrikhwensi ngaphandle konikezelo lwamandla, kwaye ilungelelanisa i-laser pulse frequency ngokulawula ukuphindaphinda kunye nomjikelezo womsebenzi wesiginali yokulayisha. Oku kuvumela i-pulse yemveliso ukuba ihambelane nesignali yomthwalo, iyenze ilungele izicelo ezifuna ulawulo oluchanekileyo.

b. Imowudi yokulawula yangaphakathi Isignali yokulawula i-frequency yakhiwe kwi-drive power supply, ngaphandle kwegalelo elongezelelweyo lophawu lwangaphandle. Abasebenzisi bangakhetha phakathi kwefrikhwensi eyakhelwe-ngaphakathi esisigxina okanye uhlengahlengiso lwangaphakathi lolawulo lwangaphakathi ukwenzela ukuba bhetyebhetye okukhulu.

c. Ukulungelelanisa ubude be-resonator okanyeimodyuli ye-electro-opticalIimpawu ze-frequency laser zingatshintshwa ngokulungelelanisa ubude be-resonator okanye usebenzisa i-electro-optical modulator. Le ndlela yokulawula i-high-frequency regulation isoloko isetyenziswa kwizicelo ezifuna amandla aphezulu aphezulu kunye nobubanzi obufutshane be-pulse, njenge-laser micromachining kunye ne-imaging yonyango.

d. Imodyuli yeAcousto optic(I-AOM Modulator) sisixhobo esibalulekileyo solawulo lwe-pulse frequency ye-laser pulse control technology.Imodyuli ye-AOMisebenzisa i-acousto optic effect (oko kukuthi, uxinzelelo lwe-oscillation yomatshini we-wave wave itshintsha isalathisi se-refractive) ukumodareyitha nokulawula umqadi we-laser.

 

4. Itekhnoloji ye-Intracavity modulation, xa kuthelekiswa nokumodareyitha kwangaphandle, i-intracavity modulation inokuvelisa ngokufanelekileyo amandla aphezulu, amandla aphezulu.i-pulse laser. Ezi zilandelayo zindlela ezine eziqhelekileyo zokumodulation intracavity:

a. Ukuzuza Ukutshintsha ngokumodareyitha ngokukhawuleza umthombo wempompo, ukufumana i-particle medium inversion number kunye nokufumana i-coefficient isekwa ngokukhawuleza, idlula isantya se-radiation evuselelweyo, okubangelwa ukunyuka okubukhali kweefotoni kwi-cavity kunye nokuveliswa kwe-laser pulse short. Le ndlela ixhaphake ngokukodwa kwi-lasemiconductor lasers, enokuvelisa i-pulses ukusuka kwi-nanoseconds ukuya kumashumi e-picoseconds, kunye nesantya sokuphindaphinda i-gigahertz ezininzi, kwaye isetyenziswa ngokubanzi kwintsimi yonxibelelwano lwe-optical kunye namazinga aphezulu okudlulisa idatha.

Ukutshintsha kwe-Q (ukutshintsha kwe-Q) Ukutshintsha kwe-Q kucinezela impendulo ye-optical ngokuzisa ilahleko ephezulu kwi-laser cavity, evumela inkqubo yokumpompa ukuba ivelise ukuguqulwa kwabemi be-particle kude ngaphaya komda, ukugcina umthamo omkhulu wamandla. Emva koko, ilahleko kwi-cavity iyancipha ngokukhawuleza (oko kukuthi, ixabiso le-Q le-cavity liyenyuka), kwaye impendulo ye-optical ivuliwe kwakhona, ukwenzela ukuba amandla agciniweyo akhululwe ngendlela ye-ultra-short high-intensity pulses.

c. Indlela yokutshixa ivelisa i-ultra-short pulses ye-picosecond okanye inqanaba le-femtosecond ngokulawula ubudlelwane besigaba phakathi kweendlela ezahlukeneyo ze-longitudinal kwi-laser cavity. Itekhnoloji yokutshixa imowudi yohlulwe ibe yimowudi yokutshixa kunye nokutshixa imo esebenzayo.

d. I-Cavity Dumping Ngokugcina amandla kwiifotoni kwi-resonator, usebenzisa isibuko se-cavity esinelahleko ephantsi ukuze sibophe ngokufanelekileyo iifotoni, sigcine ilahleko ephantsi kwi-cavity ixesha elithile. Emva komjikelezo omnye wohambo olujikelezayo, i-pulse enamandla "ilahlwa" ngaphandle kwe-cavity ngokutshintsha ngokukhawuleza into yangaphakathi yomgodi, njengemodyuli ye-acousto-optic okanye i-shutter ye-electro-optic, kunye ne-laser ye-pulse emfutshane ikhutshwa. Xa kuthelekiswa nokutshintsha kwe-Q, ukukhupha i-cavity kunokugcina ububanzi be-pulse yee-nanoseconds ezininzi kumazinga aphezulu okuphindaphinda (njenge-megahertz ezininzi) kunye nokuvumela amandla aphezulu e-pulse, ngakumbi kwizicelo ezifuna izinga eliphezulu lokuphindaphinda kunye neepulses ezimfutshane. Idityaniswe nezinye iindlela zokuvelisa i-pulse, amandla e-pulse anokuphuculwa ngakumbi.

 

Ulawulo lwe-Pulse lwelaseryinkqubo entsonkothileyo nebalulekileyo, ebandakanya ulawulo lobubanzi be-pulse, ulawulo lwe-pulse frequency kunye neendlela ezininzi zokumodulation. Ngokukhetha okufanelekileyo kunye nokusetyenziswa kwezi ndlela, ukusebenza kwe-laser kunokulungiswa ngokuchanekileyo ukuhlangabezana neemfuno zeemeko ezahlukeneyo zesicelo. Kwixesha elizayo, ngokuvela okuqhubekayo kwezinto ezintsha kunye nobuchwepheshe obutsha, itekhnoloji yokulawula i-pulse ye-laser iya kuzisa impumelelo engakumbi, kwaye ikhuthaze uphuhlisoiteknoloji laserkwicala lokuchaneka okuphezulu kunye nesicelo esibanzi.


Ixesha lokuposa: Mar-25-2025