Itekhnoloji ye-laser ye-ultrafast wafer esebenza kakhulu

I-wafer esebenza ngokukhawuleza kakhuluiteknoloji yelaser
Amandla phezuluiileza ezikhawulezayo kakhuluzisetyenziswa kakhulu kwimveliso ephucukileyo, ulwazi, i-microelectronics, i-biomedicine, amacandelo okhuselo lwesizwe kunye nomkhosi, kwaye uphando lwesayensi olufanelekileyo lubalulekile ekukhuthazeni ukuveliswa kwesayensi netekhnoloji yesizwe kunye nophuhliso olukumgangatho ophezulu.inkqubo yelaserNgenxa yeenzuzo zayo zamandla aphakathi aphezulu, amandla amakhulu okubetha kwentliziyo kunye nomgangatho ogqwesileyo wemitha, ifunwa kakhulu kwifiziksi ye-attosecond, ukucubungula izinto kunye neminye imimandla yesayensi neyemizi-mveliso, kwaye ixhalatyelwe kakhulu ngamazwe kwihlabathi liphela.
Kutshanje, iqela lophando eTshayina lisebenzise i-wafer module ezenzele ngokwayo kunye netekhnoloji yokukhulisa ukuvuselela ukuze kufezekiswe ukusebenza okuphezulu (ukuzinza okuphezulu, amandla aphezulu, umgangatho ophezulu wemitha, ukusebenza kakuhle okuphezulu) i-wafer ekhawulezayo kakhuluilezaimveliso. Ngokuyilwa kwe-regeneration amplifier cavity kunye nolawulo lobushushu bomphezulu kunye nokuzinza koomatshini kwe-disc crystal kwi-cavity, imveliso ye-laser yamandla e-single pulse >300 μJ, ububanzi be-pulse <7 ps, amandla aphakathi >150 W ayafezekiswa, kwaye ukusebenza okuphezulu kokuguqulwa kokukhanya ukuya ekukhanyeni kunokufikelela kwi-61%, oku kukwayindlela ephezulu yokuguqulwa kokukhanya okuxeliweyo ukuza kuthi ga ngoku. I-beam quality factor M2<1.06@150W, uzinzo lweeyure ezi-8 RMS<0.33%, le mpumelelo iphawula inkqubela phambili ebalulekileyo kwi-high-performance ultrafast wafer laser, eya kubonelela ngamathuba amaninzi kwizicelo ze-high-power ultrafast laser.

Ukuphindaphinda okuphezulu, inkqubo yokukhulisa ukuvuselelwa kwe-wafer enamandla aphezulu
Ulwakhiwo lwe-wafer laser amplifier luboniswe kuMfanekiso 1. Luquka umthombo wembewu yefayibha, intloko yelaser esicaba esincinci kunye nomgodi we-regenerative amplifier. I-oscillator yefayibha ene-ytterbium enegunya eliphakathi le-15 mW, ubude bomda obuphakathi be-1030 nm, ububanzi be-pulse be-7.1 ps kunye nesantya sokuphindaphinda se-30 MHz sisetyenzisiwe njengomthombo wembewu. Intloko ye-wafer laser isebenzisa ikristale ye-Yb: YAG eyenziwe ekhaya enobubanzi be-8.8 mm kunye nobukhulu be-150 µm kunye nenkqubo yokupompa ye-48-stroke. Umthombo wepompo usebenzisa i-zero-phonon line LD enobude bomda we-969 nm wokutshixa, okunciphisa i-quantum defect ukuya kwi-5.8%. Isakhiwo esikhethekileyo sokupholisa sinokupholisa ngempumelelo ikristale ye-wafer kwaye siqinisekise uzinzo lomgodi wokuvuselela. Umgodi wokuvuselela uquka ii-Pockels cells (PC), ii-Thin Film Polarizers (TFP), iiQuarter-Wave Plates (QWP) kunye ne-resonator ezinzileyo kakhulu. Ii-isolators zisetyenziselwa ukuthintela ukukhanya okukhulisiweyo ukuba kungonakalisa umthombo wembewu ngasemva. Isakhiwo se-isolator esinee-TFP1, i-Rotator kunye nee-Half-Wave Plates (HWP) sisetyenziselwa ukwahlula imbewu engenayo kunye nee-amplified pulses. I-seed pulse ingena kwigumbi lokukhulisa ukuvuselelwa nge-TFP2. Iikristale ze-Barium metaborate (BBO), i-PC, kunye ne-QWP ziyadibana ukuze zenze iswitshi ye-optical esebenzisa i-voltage ephezulu rhoqo kwi-PC ukuze ibambe i-seed pulse ngokukhetha kwaye isasazeke ngasemva nangaphambili kwi-cavity. I-pulse efunekayo iyajikeleza kwi-cavity kwaye ikhuliswa ngokufanelekileyo ngexesha lokusasazeka kwe-round trip ngokulungelelanisa kakuhle ixesha lokucinezelwa kwebhokisi.
I-amplifier yokuvuselela i-wafer ibonisa ukusebenza kakuhle kwemveliso kwaye iya kudlala indima ebalulekileyo kwimimandla yokuvelisa ephezulu efana ne-ultraviolet lithography egqithisileyo, umthombo wepompo ye-attosecond, i-3C electronics, kunye nezithuthi zamandla amatsha. Kwangaxeshanye, itekhnoloji ye-wafer laser kulindeleke ukuba isetyenziswe kwizithuthi ezinkulu ezinamandla kakhulu.izixhobo zelaser, ebonelela ngeendlela ezintsha zovavanyo zokwenziwa kunye nokuchonga izinto ezincinci kwisikali sesithuba se-nanoscale kunye nesikali sexesha le-femtosecond. Ngenjongo yokwanelisa iimfuno eziphambili zelizwe, iqela leprojekthi liza kuqhubeka nokugxila ekuphuhliseni ubuchwepheshe be-laser, liqhubeke nokulungiselela iikristale ze-laser ezinamandla aphezulu, kwaye liphucule ngempumelelo ubuchule bophando oluzimeleyo kunye nophuhliso lwezixhobo ze-laser kwicandelo lolwazi, amandla, izixhobo eziphezulu njl.