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 yisi ku isi yari lazeri ikomeye, yaranzwe ningufu nyinshi zisohoka hamwe nuburebure bwagutse. Imiterere yihariye yimiterere ya laser ikomeye 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 ryuburyo bumwe bwo guhitamo uburyo bushingiye kumurongo wo muri cavity FP, ni ukuvuga, umurongo mugari wo gukwirakwiza umurongo wa interineti ukoreshwa mukwongera igihombo cyubundi buryo burebure, kuburyo ubundi buryo burebure Muyunguruzi hanze yuburyo bwo guhatanira uburyo bitewe no gutambuka kwabo, kugirango tugere kumurongo umwe muremure. Mubyongeyeho, urwego runaka rwumurongo wogusohora urashobora kuboneka mugucunga Inguni nubushyuhe bwibipimo bya FP no guhindura intera ndende. FIG. 7. Ihame ryakazi nugukora urumuri rukwirakwiza mucyerekezo kimwe muri resonator, kurandura burundu ikwirakwizwa ryumwanya utaringanijwe w’umubare w’ibice byahinduwe mu cyuho gisanzwe gihagaze, bityo ukirinda ingaruka ziterwa no gutwika umwobo kugira ngo ugere a uburyo bumwe burebure. Ihame ryubwinshi bwa Bragg grating (VBG) guhitamo uburyo busa nubwa semiconductor na fibre ifatanye umurongo-ubugari bwa laseri twavuze haruguru, ni ukuvuga, ukoresheje VBG nkibikoresho byo kuyungurura, ukurikije uburyo bwiza bwo guhitamo no guhitamo Angle, oscillator kunyeganyega ku burebure bwihariye cyangwa umurongo kugira ngo ugere ku ruhare rwo guhitamo uburyo bwa longitudinal, nkuko bigaragara ku gishushanyo 7 (d).
Muri icyo gihe, uburyo bwinshi bwo guhitamo uburyo bwo guhitamo burashobora guhuzwa ukurikije ibikenewe kugirango tunonosore uburyo bwo guhitamo uburyo bwo guhitamo neza, kurushaho kugabanya umurongo wa interineti, cyangwa kongera imbaraga mu guhatanira uburyo bwo gutangiza uburyo bwo guhinduranya umurongo utari umurongo hamwe n’ubundi buryo, no kwagura ibisohoka by’uburebure bwa laser mugihe ikorera mumurongo muto, bigoye kubikorasemiconductor lasernalaseri.

(4) Brillouin laser

Laser ya Brillouin ishingiye kubikorwa bya Brillouin ikwirakwiza (SBS) kugirango ibone urusaku ruke, tekinoroji ya linewidth isohoka, ihame ryayo rinyuze kuri fotone no mumikoranire yimbere ya acoustic kugirango habeho guhinduranya inshuro imwe ya fotone ya Stokes, kandi bikomeza kwiyongera muri kunguka umurongo.

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

Bitewe no kunyeganyega kwinshi kumurima wa acoustic, guhinduranya inshuro ya Brillouin yibikoresho bisanzwe ni 0.1-2 cm-1 gusa, bityo hamwe na lazeri 1064 nm nkumucyo wa pompe, uburebure bwumuraba wa Stoke bukorwa akenshi ni nka 1064.01 nm, ariko ibi bivuze kandi ko imikorere ya kwant ihinduka neza cyane (kugeza 99,99% mubitekerezo). Byongeye kandi, kubera ko Brillouin yunguka umurongo wuburyo busanzwe mubisanzwe gusa murwego rwa MHZ-ghz (Brillouin yunguka umurongo wibitangazamakuru bimwe bikomeye ni nka 10 MHz gusa), ntabwo biri munsi yinyungu yumurongo wibikoresho bya laser. byurutonde rwa 100 GHz, nuko, Stoke yishimiye muri laser ya Brillouin irashobora kwerekana ibintu bigaragara bigabanya ibintu nyuma yo kwongerwaho inshuro nyinshi mu cyuho, kandi ubugari bwayo bwasohotse ni amabwiriza menshi yubunini bugufi kuruta 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 laser ya Brillouin kugeza kuri 10 W ubunini, gushiraho urufatiro rwo kwagura ikoreshwa.
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 nabwo bwerekana imbaraga zishobora gukoreshwa, cyane cyane mu itumanaho rihuza, rishobora guhuza neza ibikenewe byo kugabana umurongo wo kugwiza (WDM) cyangwa kugabana inshuro nyinshi (FDM) kuburebure bwumurongo (cyangwa inshuro ) guhuza, kandi byitezwe kuba 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.