Kukula kwa laser yopapatiza yokhala ndi mzere wopapatiza

Chitukuko chalaser yopapatiza yokhala ndi mzere wopapatiza
Kusintha kwa njira yolumikizirana ndi laser mu laser yopapatiza yokhala ndi mzere wopapatiza ndiko kusintha kwa kapangidwe ka m'mimba mwa laser. Pansipa, tikuwonetsani makonzedwe osiyanasiyana a ukadaulo wa laser wopapatiza wokhala ndi mzere wopapatiza motsatira kusintha kwa ma resonator a laser.

1. Kapangidwe ka khola lalikulu limodzi. Mtundu uwu wa laser ukhoza kugawidwa m'magulu awiri: mzere wolunjika (kapangidwe kachikale, kapangidwe kosavuta komanso kogwira mtima) ndi mzere wozungulira (kuthana ndi kuyaka kwa mabowo ndikugwiritsa ntchito gawo la mafunde oyendayenda). Non planar ring resonator (NPRO) imatchulidwa mwachindunji mu mphete ya resonator, yomwe ndi gawo lapadera komanso lokhazikika kwambiri la mafunde oyendayenda.laserKuchokera pakuwona kutalika kwa dzenje, lingagawidwe m'magawo afupiafupi (osavuta kugwiritsa ntchito single longitudinal mode SLM, koma yokhala ndi mzere wokulirapo komanso phokoso lalikulu) ndi maenje aatali (mwachibadwam'lifupi mwa mzere wopapatiza, koma kukhazikitsa ntchito ya SLM ndi vuto laukadaulo).

2. Kapangidwe ka njira imodzi yolumikizirana ndi mphuno yakunja. Kapangidwe kameneka kakupangidwira kuthetsa mavuto a nthawi yochepa yolumikizirana ndi mphuno komanso kuchotsa zovuta kutulutsa kwa mphuno mwangozi mu mphuno imodzi yayikulu, mwa kusefa ndikubwezeretsa mphuno kudzera mu mphuno yakunja kuti muchepetse mzere. Kapangidwe koyambirira kakale kanali ndi mphuno zakunja zamtundu wa Littrow ndi Littman Metcalf pogwiritsa ntchito ma grating. Vuto laukadaulo la kasinthidwe aka lili pakufananiza gawo pakati pa mphuno yayikulu ndi mphuno yakunja.
3. Mapangidwe awiri akuluakulu ophatikizika a m'mimba ozikidwa pa Bragg gratings:

Laza ya DFBkasinthidwe: Kuphatikiza kapangidwe ka Bragg ndi dera logwira ntchito ndikuyambitsa dera losintha magawo, kumakhala ndi kuphatikiza kwakukulu, kukhazikika komanso kothandiza, komanso kumathandizira kusuntha kwa wavelength ya DBR. Vuto laukadaulo lili pakukonza grating (monga njira yachiwiri ya epitaxial RGF-DFB ndi njira za SG-DFB zolembera za semiconductor DFB).
Kapangidwe ka laser ya DBR: imalowa m'malo mwa magalasi achikhalidwe ndi mapangidwe a Bragg osasinthika nthawi ndi nthawi, omwe ali ndi mawonekedwe osefera ndipo ndi osavuta kugwiritsa ntchito SLM yokhala ndi mabowo afupiafupi. Malinga ndi njira yopezera phindu, imatha kugawidwa m'magulu a semiconductor DBR (yogwirizana bwino ndi njira) ndi fiber DBR (yodalira ukadaulo wokonza ulusi ndi kugwiritsa ntchito mankhwala osokoneza bongo).

Pofuna kupondereza kwambiri mzere wa mpata waukulu wa mpata waufupi (monga DFB/DBR), kapangidwe ka mpata wakunja kophatikizika kadzagwiritsidwa ntchito. Kapangidwe ka mpata wakunja kasintha chifukwa cha chitukuko cha ukadaulo:
Malo otseguka akunja: mawonekedwe akuluakulu oyambirira, kuphatikizapo grating (Littrow/Littman) ndi zosefera zosiyanasiyana za kuwala (monga muyezo wa FP).
Fiber optic external cavity: Pogwiritsa ntchito zipangizo zonse za fiber optic (monga ma fiber optic circuits, ma FBG, ma fiber optic FP cavities, ndi zina zotero), mphamvu yolumikizirana ndi yoletsa kusokoneza imakhala yolimba.
Chipinda chakunja cha mafunde: Kukonza ma nano ang'onoang'ono pogwiritsa ntchito zipangizo za semiconductor monga Si ndi Si3N4, zomwe zimapangitsa kuti makinawo akhale ochepa komanso okhazikika.

Pomaliza, nkhaniyi ikupereka kasinthidwe ka ma laser oscillating lasers a optoelectronic, omwe ndi njira yapadera yoperekera ndemanga, monga ukadaulo wa PDH frequency stabilization. Pogwiritsa ntchito electromagnetic negative feedback kuti mutseke ma frequency a laser ku gwero lokhazikika kwambiri, kukhazikika kwa ma frequency apamwamba kwambiri kumatha kuchitika. Komabe, dongosololi ndi lovuta, lokwera mtengo, ndipo kusinthasintha kwa mafunde kumakhala kochepa.