Kev lag luam femtosecond lasers yog tsim los ntawm kev tso cov optics thiab lawv cov mounts ntawm ib lub substrate, uas yuav tsum tau nruj nruj ntawm cov optics. Yog li nws puas tuaj yeem ua femtosecond lasers tawm ntawm iav? Cov kws tshawb fawb ntawm Swiss Federal Institute of Technology hauv Lausanne tau tswj kom ua li ntawd nrog lub laser tsis loj dua qhov loj ntawm daim npav rho nyiaj thiab yooj yim rau kev sib dhos, raws li qhov tseeb ntawm phau ntawv Journal Optics.
Duab Cov kws tshawb fawb tau tsim ib lub laser gigafemtosecond ntawm lub iav substrate.
Vim tias iav yog cov khoom siv ruaj khov vim nws qhov qis thermal expansion dua li cov khoom siv sib txawv, cov kws tshawb fawb tau hais tias lawv xaiv iav ua lub substrate thiab siv lub laser femtosecond coj mus muag rau etch tshwj xeeb grooves rau hauv iav rau qhov tseeb qhov chaw ntawm lub laser lub hauv paus Cheebtsam. Txawm hais tias nyob rau hauv micron-scale precision manufacturing, grooves thiab cov khoom lawv tus kheej tsis meej txaus kom ua tiav laser-zoo dlhos. Hauv lwm lo lus, daim iav tseem tsis tau ua tiav tag nrho, yog li nyob rau theem no, lawv cov iav iav tsis tuaj yeem siv los ua lub laser.
Yog li, cov kws tshawb nrhiav ntxiv tsim qhov etching kom daim iav zaum hauv qhov zawj nrog lub micromechanical khoov uas hauv zos twists daim iav thaum lub femtosecond laser illuminated. Tom qab aligning daim iav nyob rau hauv no txoj kev, lawv thiaj li tsim ib tug ruaj khov, me me femtosecond laser.
Txawm hais tias nws qhov me me, lub laser muaj lub zog siab tshaj plaws ntawm 1 kilowatt thiab emits pulses tsawg dua 200 femtoseconds, lub sijhawm luv luv uas lub teeb tsis tuaj yeem hla tib neeg cov plaub hau.
Qhov no txoj kev mus tas li aligning free-space optics los ntawm laser-teeb meem kev sib cuam tshuam yog scalable rau ntau yam ntawm optical circuits nrog huab alignment daws teeb meem mus rau sub-nanometer scale.
