Yakakwira performance ultrafast wafer laser tekinoroji

High performance ultrafast waferLaser tekinoroji
High-simbaUltrafast lasersanoshandiswa zvakanyanya mukugadzirwa kwepamusoro, ruzivo, microelectronics, biomedicine, dziviriro yenyika nemauto, uye tsvakiridzo yesainzi yakakodzera yakakosha kusimudzira hunyanzvi hwenyika hwesainzi uye tekinoroji uye budiriro yemhando yepamusoro. Mutete-chidimbuLaser systemnemabhenefiti ayo eavhareji simba repamusoro, simba guru rekupuruzira uye kunaka kwebeam kune kudiwa kukuru muattosecond fizikisi, kugadzirisa zvinhu uye mamwe minda yesainzi nemaindasitiri, uye yave ichinetsekana zvakanyanya nenyika dzepasirese.
Munguva pfupi yadarika, timu yekutsvagisa kuChina yakashandisa yakazvigadzira yafer module uye regenerative amplification tekinoroji kuti iite yakakwira-performance (yakanyanya kugadzikana, simba repamusoro, danda remhando yepamusoro, hunyanzvi hwepamusoro) yekupedzisira-inokurumidza wafer.laseroutput. Kuburikidza nedhizaini yekuvandudza amplifier mhango uye kutonga kwekushisa kwepamusoro uye kugadzikana kwemuchina weiyo disc crystal mugomba, iyo laser kubuda kweimwe pulse simba> 300 μJ, pulse wide <7 ps, avhareji simba> 150 W inowanikwa. , uye iyo yepamusoro-soro yekushandura chiedza-ku-chiedza inogona kusvika 61%, inovawo yepamusoro-soro yekushandura yekushandura yakashumwa kusvika ikozvino. The beam quality factor M2 <1.06@150W, 8h kugadzikana RMS<0.33%, kubudirira uku kunoratidza kufambira mberi kwakakosha mukushanda kwepamusoro-soro kwekupedzisira kwewafer laser, iyo ichapa mikana yakawanda ye-high-power ultrafast laser applications.

Yakakwira yekudzokorora frequency, yakakwira simba wafer regeneration amplification system
Chimiro chewafer laser amplifier inoratidzwa muFigure 1. Inosanganisira fiber seed source, nhete yelaser musoro uye regenerative amplifier cavity. Iyo ytterbium-doped fiber oscillator ine avhareji simba re15 mW, yepakati wavelength ye1030 nm, pulse wide ye7.1 ps uye yekudzokorora mwero we30 MHz yakashandiswa sesosi yembeu. Musoro wewafer laser unoshandisa Yb yakagadzirwa kumba: YAG crystal ine dhayamita ye8.8 mm uye ukobvu hwe150 µm uye 48-stroke yekupomba system. Iyo pombi sosi inoshandisa zero-phonon mutsara LD ine 969 nm yekuvhara wavelength, iyo inoderedza quantum defect kusvika 5.8%. Iyo yakasarudzika yekutonhora chimiro inogona kunyatso kutonhodza iyo wafer crystal uye kuve nechokwadi kugadzikana kweiyo mhango yekuvandudza. Iyo yekuvandudza inosimudzira mhango ine Pockels maseru (PC), Thin Film Polarizers (TFP), Quarter-Wave Plates (QWP) uye yakakwirira-yakadzikama resonator. Isolators inoshandiswa kudzivirira mwenje wakawedzerwa kubva mukukuvadza-kukuvadza mbeu. Chimiro chakazvimiririra chine TFP1, Rotator uye Half-Wave Plates (HWP) inoshandiswa kupatsanura mhodzi dzekupinza uye mapurusi akawedzera. Iyo mhodzi pulse inopinda mukamuri yekuvandudza yekuwedzera kuburikidza neTFP2. Barium metaborate (BBO) makristasi, PC, uye QWP inosanganiswa kugadzira switch yekuona iyo inoshandisa nguva nenguva yakakwira voltage kuPC kusarudza kutora mhodzi yemhodzi uye kuiparadzira kumashure nekudzoka mugomba. Iyo inodiwa pulse oscillates mugomba uye inokwidziridzwa zvinobudirira panguva yekutenderera rwendo kuparadzira nekugadzirisa zvakanaka nguva yekumanikidza yebhokisi.
Iyo wafer regeneration amplifier inoratidza kuita kwakanaka kwekubuda uye ichaita basa rakakosha muminda-yekupedzisira yekugadzira senge yakanyanyisa ultraviolet lithography, attosecond pombi sosi, 3C zvemagetsi, uye nyowani simba mota. Panguva imwecheteyo, iyo wafer laser tekinoroji inotarisirwa kuiswa kune hombe-ane simbaLaser zvishandiso, ichipa nzira itsva yekuedza yekuumba uye kunyatsoonekwa kwezvinhu pane nanoscale space scale uye femtosecond time scale. Nechinangwa chekushandira izvo zvinodikanwa zvikuru zvenyika, timu yepurojekiti icharamba ichitarisa pane laser tekinoroji innovation, ichienderera mberi nekupwanya kuburikidza nekugadzirira kwehunyanzvi hwepamusoro-simba laser makristasi, uye zvinobudirira kuvandudza yakazvimirira yekutsvagisa uye kusimudzira kugona kwelaser michina mu. minda yeruzivo, simba, midziyo yepamusoro uye zvichingodaro.