Ububanzi obumxinwa beLaser Technology Icandelo leSibini

Ububanzi obumxinwa beLaser Technology Icandelo leSibini

(3)I-laser yelizwe eliqinileyo

Ngo-1960, i-laser yokuqala yehlabathi yerubhi yayiyilaser yelizwe elomeleleyo, ephawulwa ngamandla aphumayo aphezulu kunye nokugubungela amaza abanzi. Ubume obukhethekileyo besithuba se-laser ye-slid-state yenza ukuba ibe bhetyebhetye ngakumbi kuyilo lwemveliso yobubanzi obumxinwa. Okwangoku, iindlela eziphambili eziphunyeziweyo zibandakanya indlela yomgodi omfutshane, indlela yendlela enye ye-ring cavity, indlela ye-intracavity standard, i-torsion pendulum mode cavity method, i-volume Bragg grating method kunye nendlela yokutofa kwembewu.

Umzobo wesi-7 ubonisa ubume bemodedi yobude be-laser abaliqela.

Umzobo we-7 (a) ubonisa umgaqo wokusebenza wokukhetha imowudi eyodwa yobude obusekwe kumgangatho we-FP we-in-cavity, oko kukuthi, i-spectrum yokuhambisa i-linewidth emxinwa yomgangatho isetyenziselwa ukunyusa ukulahleka kwezinye iindlela zexesha elide, ukwenzela ukuba ezinye iindlela zobude zihlulwe kwinkqubo yokhuphiswano lwemode ngenxa yemodeta yabo encinci yokuhambisa i-longidi enye, ngoko ke njengoko imodareyitha yokudlulisa i-longitu. Ukongeza, uluhlu oluthile lwemveliso yokuguqula i-wavelength inokufumaneka ngokulawula i-Angle kunye nobushushu bomgangatho we-FP kunye nokutshintsha i-longitudinal mode interval. IKHIWANE. I-7 (b) kunye (c) ibonisa i-oscillator ye-ring non-planar (i-NPRO) kunye ne-torsional pendulum mode ye-cavity yendlela esetyenziselwa ukufumana i-mode eyodwa ye-longitudinal mode output. Umgaqo osebenzayo kukwenza umqadi usasaze kwicala elinye kwiresonator, ukuphelisa ngokufanelekileyo ukusasazwa kwendawo engalinganiyo inani lamasuntswana ajikiweyo kumngxunya oqhelekileyo wokuma wamaza, kwaye ngaloo ndlela uphephe impembelelo yesiphumo sokutshisa umngxuma womhlaba ukufezekisa imveliso yemowudi enye yobude. Umgaqo we-bulk Bragg grating (VBG) imodi yokukhetha ifana ne-semiconductor kunye ne-fiber emxinwa yomgca-width lasers ekhankanywe ngaphambili, oko kukuthi, ngokusebenzisa i-VBG njengento yokucoca, ngokusekelwe ekukhethweni kwayo okuhle kwe-spectral kunye ne-Angle selectivity, i-oscillator i-oscillates kwi-wavelength ethile okanye ibhendi ukuze ufezekise indima ye-longitude ye-longidinal (i-longidinal ebonisiweyo).
Kwangaxeshanye, iindlela ezininzi zokukhetha iimowudi zexesha elide zinokudityaniswa ngokweemfuno zokuphucula ukuchaneka kokhetho lwemowudi yobude, ngakumbi ukucutha ububanzi bomgca, okanye ukonyusa ubungakanani bokhuphiswano lwemowudi ngokuzisa uguqulo lwamaza olwenziwa ngaphandle komgca kunye nezinye iindlela, kunye nokwandisa ubude bobude belaser ngelixa usebenza kumgca omxinwa, ekunzima ukuwenza.semiconductor laserkwayei-fiber lasers.

(4) I-Brillouin laser

I-laser yeBrillouin isekwe kwisiphumo esivuselelweyo seBrillouin (SBS) sokufumana ingxolo ephantsi, itekhnoloji yokukhupha itekhnoloji yobubanzi obumxinwa, umgaqo wayo usebenzisa ifoton kunye nentsebenziswano yangaphakathi ye-acoustic field ukuvelisa utshintsho oluthile lwefrequency ye-Stokes photons, kwaye iyandiswa ngokuqhubekayo ngaphakathi kwe-bandwidth yokuzuza.

Umzobo we-8 ubonisa umzobo wezinga lokuguqulwa kwe-SBS kunye nesakhiwo esisisiseko se-laser Brillouin.

Ngenxa yesantya esisezantsi sokungcangcazela kwebala le-acoustic, iBrillouin frequency shift of the material idla ngokuba yi-0.1-2 cm-1 kuphela, ke nge-1064 nm laser njengokukhanya kwempompo, iStokes wavelength eveliswayo ihlala imalunga ne-1064.01 nm kuphela, kodwa oku kukwathetha ukuba ukuguqulwa kwayo komyinge we-quantum kuphezulu kakhulu kwi-9 ukuya kwi-9 ephezulu. Ukongeza, ngenxa yokuba iBrillouin ifumana umgca wobubanzi obuphakathi idla ngokulandelelana kwe-MHZ-ghz (iBrillouin ifumana umgca bubanzi bemithombo yeendaba eqinileyo imalunga ne-10 MHz kuphela), ingaphantsi kakhulu kunenzuzo yobubanzi bento esebenzayo ye-laser yomyalelo we-100 GHz, ke, i-Stokes ichulumancile eBrillouinification kwi-laser ecacileyo emva kokubonisa i-laser ecacileyo. kunye nobubanzi bomgca wemveliso yimiyalelo emininzi yobukhulu obumxinwa kunobubanzi bomgca wempompo. Okwangoku, i-laser ye-Brillouin iye yayindawo yophando kwibala leefotonics, kwaye kukho iingxelo ezininzi kwi-Hz kunye ne-sub-Hz yomyalelo wemveliso emxinwa kakhulu yomgca womgca.

Kwiminyaka yakutshanje, izixhobo zeBrillouin ezinesakhiwo se-waveguide ziye zavela kwintsimi yeIifotoni ze-microwave, kwaye ziphuhlisa ngokukhawuleza kwicala le-miniaturization, ukuhlanganiswa okuphezulu kunye nesisombululo esiphezulu. Ukongeza, i-laser ye-Brillouin eqhuba isithuba esekwe kwizinto ezintsha zekristale ezifana nedayimani nayo ingene kumbono wabantu kule minyaka mibini idlulileyo, impumelelo yayo entsha kumandla esakhiwo se-waveguide kunye ne-cascade SBS bottleneck, amandla e-laser ye-Brillouin ukuya kwi-10 W ubukhulu, ibeka isiseko sokwandisa isicelo sayo.
Ukudibana ngokubanzi
Ngophononongo oluqhubekayo lolwazi olusikwayo, i-laser yobubanzi obumxinwa ibe sisixhobo esiyimfuneko kuphando lwezenzululwazi ngokusebenza kwabo okugqwesileyo, okufana ne-laser interferometer LIGO yokubhaqwa kwamaza omxhuzulane, osebenzisa umgca omxinwa omnye.laserkunye nobude be-1064 nm njengomthombo wembewu, kunye nobubanzi bokukhanya kwembewu bungaphakathi kwe-5 kHz. Ukongeza, iilaser ezinobubanzi obumxinwa obunobunzima bokutyhutyhutyha kwaye akukho ndlela yokutsiba iphinda ibonise amandla amakhulu osetyenziso, ngakumbi kunxibelelwano oluhambelanayo, olunokuthi luhlangabezane ngokugqibeleleyo neemfuno ze-wavelength division multiplexing (WDM) okanye i-frequency division multiplexing (FDM) yokulinganisa ubude (okanye ukuphindaphinda) ukulinganisa, kwaye kulindeleke ukuba ibe sisixhobo esisisiseko sesizukulwana esilandelayo setekhnoloji yonxibelelwano lweselula.
Kwixesha elizayo, ukuveliswa kwezinto ezintsha zelaser kunye nobuchwepheshe bokucubungula kuya kukhuthaza ngakumbi ukunyanzeliswa kwelaser linewidth, ukuphuculwa kozinzo lwamaza, ukwandiswa koluhlu lwamaza kunye nokuphuculwa kwamandla, ukuvula indlela yokuhlola abantu kwihlabathi elingaziwayo.