Amandla aphezulu femtosecondlaserinexabiso elikhulu lesicelo kuphando lwezenzululwazi kunye neenkalo zoshishino ezifana nokuveliswa kwe-terahertz, i-attosecond pulse generation kunye ne-optical frequency comb.Iilaser ezitshixiwe ngeModngokusekwe kwimithombo yeendaba yemveli yebhlokhi inqanyulwe yimpembelelo ye-lensing ye-thermal kumandla aphezulu, kwaye okwangoku amandla aphezulu aphuma malunga ne-20 W.
I-laser yephepha elincinci isebenzisa ulwakhiwo lwempompo yokupasa okuninzi ukubonisaimpompo ukukhanyakwiphepha lifumana eliphakathi kunye nobukhulu be-100 microns ukufunxa impompo esebenzayo. Ukufumana okuphakathi okuncinci kakhulu kudityaniswe netekhnoloji ye-backcooling kunciphisa kakhulu impembelelo ye-lens ye-thermal kunye ne-nonlinear effect, kwaye inokufikelela kwimveliso yamandla aphezulu e-femtosecond pulse.
I-wafer oscillators edityaniswe ne-Kerr lens mode-locking itekhnoloji zezona ndlela ziphambili zokufumana i-laser yamandla aphakathi aphezulu kunye nobubanzi be-pulse ngokomyalelo we-femtosecond.
IKHIWANE. I-1 (a) I-72 ye-optical structure diagram kunye (b) nedayagram ebonakalayo yemodyuli yempompo
Iqela labaphandi abavela kwi-Chinese Academy of Sciences layila kwaye lakha i-laser ye-laser yephepha le-lens ye-Kerr esekelwe kwimodyuli yempompo ye-72-indlela yokuziphuhlisa, kwaye iphuhlise i-laser ye-Kerr lens mode-lock sheet sheet ene-avareji ephezulu yamandla kunye ne-pulse eyodwa yamandla e-China.
Ngokusekwe kumgaqo we-Kerr lens mode-locking kunye nokubala okuphindaphindiweyo kwe-ABCD matrix, iqela lophando lahlalutya kuqala ithiyori yokutshixa icwecwe elicekethekileyo le-Kerr lens mode-locking laser, yalinganisa utshintsho lwemowudi kwi-resonator ngexesha lomsebenzi wokutshixa kunye nokusebenza okuqhubekayo, kwaye yaqinisekisa ukuba imowudi yemowudi ye-cavity iyancipha i-radius kwi-diaphragm enzima emva kwe-diaphragm enzima ngaphezu kwe-7.
Emva koko, ngokukhokelwa ngumgaqo-siseko woyilo, iqela lophando lenze kwaye lakha i-resonator ye-lens ye-Kerr ye-lens evaliweyo (FIG. 2) ngokusekelwe kwindlela ye-72-way pump module (FIG.1) ephuhliswe ngokuzimeleyo liqela, kwaye ifumene i-pulsed laser output kunye namandla aphakathi kwe-11.78W, ububanzi be-pulse ye-245 μ2 fs kunye ne-7 yempompo yempompo ye-J0 enye. Ububanzi be-pulse ephumayo kunye nokuhluka kwemodi ye-intracavity ihambelana kakuhle neziphumo zokulinganisa.
IKHIWANE. 2 Umzobo ocwangcisiweyo womgodi ophumayo we-lens ye-Kerr lens itshixiwe Yb: YAG wafer laser esetyenziswa kuvavanyo.
Ukuze kuphuculwe amandla emveliso yelaser, iqela lophando lonyuse iradiyasi egobileyo yesipili esijolisa, kwaye yalungisa kakuhle ubukhulu beKerr obuphakathi kunye nokusasazwa okwesibini. Xa umbane wempompo umiselwe kwi-94 W, amandla okuphuma okuphakathi anyuswe ukuya kwi-22.33 W, kunye nobubanzi be-pulse yi-394 fs kunye ne-pulse eyodwa yamandla yi-0.28 μJ.
Ukwandisa ngakumbi amandla okuphuma, iqela lophando liya kwandisa ngakumbi i-radius ye-curvature ye-concave mirror pair, ngelixa ibeka i-resonator kwindawo ephantsi ye-vacuum evaliweyo ukunciphisa impembelelo yokuphazamiseka komoya kunye nokusabalalisa umoya.
Ixesha lokuposa: Aug-15-2023