Ubunini bwa Linewidth Laser Technology Igice cya kabiri

Ubunini bwa Linewidth Laser Technology Igice cya kabiri

(3)Lazeri ya leta ikomeye

Mu 1960, lazeri ya mbere ya rubyisi ku isi yari lazeri ikomeye, yaranzwe ningufu zitanga umusaruro mwinshi hamwe n’uburebure bwagutse. Imiterere yihariye ya laser-ikomeye ya laser ituma irushaho guhinduka mugushushanya kwagutse koroheje. Kugeza ubu, uburyo nyamukuru bwashyizwe mu bikorwa burimo uburyo bwa cavity ngufi, uburyo bumwe bwo kuzenguruka impeta, uburyo busanzwe bwa interacavity, uburyo bwa torsion pendulum uburyo bwa cavity uburyo, ingano ya Bragg yo gufata hamwe nuburyo bwo gutera imbuto.

Igicapo 7 cerekana imiterere yuburyo busanzwe bumwe-burebure burigihe bukomeye-leta.

Igicapo 7 (a) cerekana ihame ryakazi ryo gutoranya uburyo bumwe bwo guhitamo bushingiye kumurongo wo muri cavity FP, ni ukuvuga, umurongo mugari wo gukwirakwiza umurongo wa interineti ukoreshwa mu kongera igihombo cyubundi buryo burebure, kuburyo ubundi buryo burebure bwungururwa muburyo bwo guhatanira uburyo bitewe no kohereza kwabo, kugirango bigere kubikorwa byigihe kirekire. Mubyongeyeho, urwego runaka rwumurongo wogusohora urashobora kuboneka mugucunga Inguni nubushyuhe bwibipimo bya FP no guhindura intera ndende. FIG. 7. Ihame ryakazi nugukora urumuri rukwirakwira mucyerekezo kimwe muri resonator, kurandura neza ikwirakwizwa ryikwirakwizwa ryumubare w’umubare w’ibice byahinduwe mu cyuho gisanzwe gihagaze, bityo ukirinda ingaruka ziterwa n’umuriro utwikiriye kugira ngo ugere ku kintu kimwe kirekire. Ihame ryubwinshi bwa Bragg grating (VBG) guhitamo uburyo busa nubwa semiconductor na fibre ifatanye umurongo-ubugari bwa lazeri twavuze haruguru, ni ukuvuga, ukoresheje VBG nkikintu cyo kuyungurura, ukurikije uburyo bwiza bwo guhitamo no guhitamo Angle, oscillator ihindagurika ku burebure bwihariye cyangwa umurongo kugira ngo ugere ku nshingano zo guhitamo uburyo burebure, nkuko bigaragara ku gishushanyo 7 (d).
Muri icyo gihe, uburyo butandukanye bwo guhitamo uburyo bwo guhitamo burashobora guhuzwa ukurikije ibikenewe kugirango tunonosore uburyo bwo gutoranya uburyo bwo guhitamo neza, kurushaho kugabanya umurongo wa interineti, cyangwa kongera imbaraga mu guhatanira uburyo bwo gutangiza uburyo bwo guhinduranya imirongo idafite umurongo hamwe n’ubundi buryo, no kwagura umusaruro w’umurongo wa lazeri mugihe ukorera mu murongo muto, bigoye kubikora.semiconductor lasernalaseri.

(4) Brillouin laser

Lazeri ya Brillouin ishingiye ku ngaruka zikwirakwizwa za Brillouin (SBS) kugira ngo haboneke urusaku ruto, tekinoroji ya tekinoroji yo mu bwoko bwa enterineti, ihame ryayo rinyuze kuri foton no mu murima wa acoustic imbere kugirango habeho guhinduranya inshuro imwe ya fotone ya Stokes, kandi ikomeza kwiyongera muburyo bwo kwaguka.

Igishushanyo cya 8 cyerekana igishushanyo cyurwego rwo guhindura SBS nuburyo bwibanze bwa laser ya Brillouin.

Bitewe no guhindagurika kwinshi kwumurima wa acoustic, guhinduranya inshuro ya Brillouin yibikoresho mubisanzwe ni cm 0.1-2 cm-1 gusa, hamwe na lazeri 1064 nm nkumucyo wa pompe, uburebure bwumuraba wa Stokes bwakozwe akenshi buba hafi 1064.01 nm, ariko kandi bivuze ko imikorere ya kwant kwayo ari hejuru cyane (kugeza kuri 99,99% mubitekerezo). Byongeye kandi, kubera ko Brillouin yunguka umurongo wuburyo busanzwe mubusanzwe gusa ni gahunda ya MHZ-ghz (Brillouin yunguka umurongo wibitangazamakuru bimwe bikomeye ni nka 10 MHz gusa), ntabwo iri munsi yinyungu yumurongo wibikoresho bya lazeri ikora ya 100 GHz, bityo rero, Stoke yishimiye ubunini bwa lazeri ya marrike irashobora kwerekana ibintu byinshi byerekana ubugari bwayo. ubugari bwa pompe. Kugeza ubu, laser ya Brillouin yahindutse ahantu h’ubushakashatsi mu bijyanye na fotonike, kandi hari raporo nyinshi zerekeranye na Hz na sub-Hz byateganijwe cyane.

Mu myaka yashize, ibikoresho bya Brillouin bifite imiterere ya waveguide byagaragaye murwego rwamicrowave Photonics, kandi ziratera imbere byihuse mu cyerekezo cya miniaturizasiya, kwishyira hamwe no gukemura hejuru. Byongeye kandi, laser ikoresha Brillouin laser ishingiye ku bikoresho bishya bya kirisiti nka diyama nayo yinjiye mu iyerekwa ry’abantu mu myaka ibiri ishize, iterambere ryayo rishya mu mbaraga z’imiterere ya waveguide hamwe na cascade SBS icika intege, imbaraga za lazeri ya Brillouin kugera kuri 10 W, ishyiraho urufatiro rwo kwagura ikoreshwa ryayo.
Ihuriro rusange
Hamwe nubushakashatsi bukomeje bwo kumenya ubumenyi bugezweho, lazeri yoroheje yagutse yabaye igikoresho cyingirakamaro mubushakashatsi bwa siyanse hamwe nibikorwa byabo byiza, nka laser interferometer LIGO yo gukurura imbaraga za rukuruzi, ikoresha umurongo umwe mutolaserhamwe nuburebure bwa 1064 nm nkisoko yimbuto, naho umurongo wurumuri rwimbuto uri muri 5 kHz. Mubyongeyeho, ubugari-bugari bwa lazeri hamwe nuburebure bwumurongo ushobora guhinduka kandi ntanuburyo bwo gusimbuka bwerekana kandi imbaraga zikomeye zo gukoresha, cyane cyane mu itumanaho rifatanije, rishobora guhuza neza ibikenewe byo kugabana umurongo wikwirakwizwa ryinshi (WDM) cyangwa kugabana inshuro nyinshi (FDM) kugirango uburebure bwumurongo (cyangwa inshuro), kandi byitezwe ko bizaba igikoresho cyibanze cyibisekuruza bizaza byikoranabuhanga rya terefone igendanwa.
Mu bihe biri imbere, guhanga ibikoresho bya lazeri hamwe n’ikoranabuhanga ryo gutunganya bizarushaho guteza imbere igabanuka ry’umurongo wa lazeri, kunoza ituze ry’umurongo, kwagura intera y’umuraba no kuzamura ingufu, bizatanga inzira y’ubushakashatsi bw’abantu ku isi itazwi.