Itumanaho rya Quantum: lasers z'ubugari bw'umurongo muto

Itumanaho rya Quantum:laser z'ubugari bw'umurongo muto

Laser y'ubugari bw'umurongo mutoni ubwoko bwa laser ifite imiterere yihariye y'urumuri, irangwa n'ubushobozi bwo gukora urumuri rwa laser rufite ubugari buto cyane bw'umurongo ugaragara (ni ukuvuga spectrum ntoya). Ubugari bw'umurongo wa laser ifite ubugari butoya bw'umurongo buvuga ubugari bwa spectrum yayo, ubusanzwe igaragara mu mpande z'umurambararo mu gipimo cy'umubare, kandi ubugari buzwi kandi nka "ubugari bw'umurongo ugaragara" cyangwa "ubugari bw'umurongo". Udupira duto tw'umurongo dufite ubugari buto bw'umurongo, ubusanzwe buri hagati ya kilohertz magana make (kHz) na megahertz nke (MHz), buto cyane ugereranyije n'ubugari bw'umurongo ugaragara bw'udupira dusanzwe tw'umurongo ugaragara.

Ishyirwa mu byiciro hakurikijwe imiterere y'umwobo:

1. Imirasire ya laser ikoresha umurongo ugororotse igabanyijemo ubwoko bwa Bragg reflection (DBR Laser) n'ubwoko bwa feedback ikoresheje umurongo urambuye (DFB Laser) imiterere ibiri. Itara risohoka rya laser zombi ni urumuri ruhamye cyane rufite ubugari buto n'urusaku ruto. Itara rya fiber rya DFB rishobora kugera ku bitekerezo bya laser no kulaserguhitamo uburyo, bityo ubushobozi bwo gupima frequency ya laser buhagaze neza, kandi biroroshye kubona uburyo bwo gupima frequency imwe ihamye.

2. Lazeri za fiber zikozwe mu ruziga zisohora lazeri zifite ubugari buto binyuze mu gushyiramo filters zifite umugozi muto nka Fabry-Perot (FP) interference cavities, fiber grating cyangwa sagnac ring cavities mu ruziga. Ariko, bitewe n'uburebure burebure bw'uruziga, interval ya longitude mode ni nto, kandi biroroshye gusimbuka mode bitewe n'ibidukikije, kandi guhagarara kwayo ni kuke.

Ikoreshwa ry'ibicuruzwa:

1. Sensor y'urumuri. Laser y'ubugari buto nk'isoko ry'urumuri ryiza ku masensor y'urumuri, iyo ihujwe n'isensor y'urumuri, ishobora kugera ku gupima neza kandi mu buryo bworoshye. Urugero, mu masensor y'umuvuduko cyangwa ubushyuhe bw'urumuri, uburyo laser y'ubugari buto ihagaze neza bufasha kwemeza neza ibisubizo byo gupima.

2. Igipimo cya spectral gifite ubushobozi bwo gupima neza. Lazeri y'ubugari bw'umurongo muto ifite ubugari buto cyane bw'umurongo wa spectral, bigatuma iba isoko nziza cyane ya spectrum zigaragaza ubushobozi bwo gupima neza. Mu guhitamo uburebure n'ubugari bukwiye, lazeri y'ubugari buto bushobora gukoreshwa mu gusesengura neza spectral no gupima neza spectral. Urugero, mu byuma bipima gazi no mu kugenzura ibidukikije, lazeri y'ubugari buto bushobora gukoreshwa mu gupima neza uburyo optical absorption, optical emission na molekile spectra mu kirere.

3. Lidar single-frequency narrow line-width fibre lasers nazo zifite akamaro kanini muri liDAR cyangwa sisitemu yo gupima laser. Ikoresheje single frequency narrow line fiber laser nk'isoko y'urumuri rwo gutahura, hamwe no kumenya optical coherence, ishobora kubaka intera ndende (ibirometero amagana) liDAR cyangwa rangefinder. Iri hame rifite ihame rimwe ry'imikorere nk'iry'ikoranabuhanga rya OFDR muri optical fiber, bityo ntabwo ifite ubushobozi bwo kureba ahantu henshi gusa, ahubwo inashobora kongera intera yo gupima. Muri iyi sisitemu, ubugari bw'umurongo wa laser spectral cyangwa uburebure bw'umurongo bugena intera yo gupima intera n'ukuri, bityo uko urumuri rugenda ruhuza neza, niko sisitemu yose ikora neza.