Tuning ka'idar na Tunable semiconductor Laser (Tunable Laser)

Tuning manufa naLaser mai kunnawa semiconductor(Laser mai kunnawa)

Laser semiconductor mai ɗorewa wani nau'in Laser ne wanda zai iya ci gaba da canza tsayin fitarwar Laser a wani kewayon. Laser semiconductor mai ɗorewa yana ɗaukar sautin thermal, kunna wutar lantarki da na'ura na inji don daidaita tsayin rami, bakan tunani na grating, lokaci da sauran masu canji don cimma daidaitawar tsayin tsayi. Irin wannan Laser yana da aikace-aikace da yawa a cikin sadarwa na gani, spectroscopy, ji, likitanci da sauran fannoni. Hoto na 1 yana nuna ainihin abun da ke ciki na aLaser mai daidaitawa, gami da naúrar samun haske, kogon FP wanda ya ƙunshi madubai na gaba da na baya, da naúrar zaɓin yanayin gani. A ƙarshe, ta hanyar daidaita tsayin rami na tunani, tace yanayin yanayin gani zai iya kaiwa ga fitar da zaɓi na tsawon tsayi.

FIG.1

Hanyar daidaitawa da kuma samuwar ta

Ƙa'idar daidaitawa na tunablesemiconductor lasersya dogara ne akan canza sigogi na zahiri na resonator na Laser don cimma ci gaba ko sauye-sauye masu mahimmanci a cikin tsayin igiyoyin laser fitarwa. Waɗannan sigogi sun haɗa da, amma ba'a iyakance su ba, fihirisar karkatarwa, tsayin rami, da zaɓin yanayi. Abubuwan da ke gaba suna dalla-dalla da yawa hanyoyin daidaitawa gama gari da ƙa'idodinsu:

1. Gyaran allura mai ɗaukar kaya

Gyaran allura mai ɗaukar kaya shine canza maƙasudin ma'aunin abin ta hanyar canza allura na yanzu zuwa cikin yanki mai aiki na laser semiconductor, ta yadda za'a sami damar daidaita tsayin tsayi. Lokacin da halin yanzu ya ƙaru, ƙaddamarwar mai ɗaukar hoto a cikin yanki mai aiki yana ƙaruwa, yana haifar da canji a cikin ƙididdiga mai jujjuyawa, wanda hakan yana rinjayar tsayin laser.

2. Thermal kunna Thermal kunna shi ne don canza refractive index da rami tsawon kayan ta canza aiki zafin jiki na Laser, don cimma raƙumi kunna. Canje-canje a cikin zafin jiki yana rinjayar ma'anar refractive da girman jiki na kayan.

3. Gyaran injina Gyaran injina shine don cimma daidaitattun raƙuman ruwa ta hanyar canza matsayi ko kusurwar abubuwan gani na waje na Laser. Hannun kunna injina gama-gari sun haɗa da canza Angle of grating diffraction da motsa matsayin madubi.

4 Electro-optical tuning Ana samun damar kunna wutar lantarki ta hanyar amfani da filin lantarki zuwa wani abu mai mahimmanci don canza ma'anar refractive na kayan, ta yadda za a samu daidaitawar tsayin raƙuman ruwa. Ana yawan amfani da wannan hanyar a cikinelectro-optical modulators (EOM) da kuma na'urorin da aka gyara na lantarki.

A taƙaice, ƙa'idar daidaitawa ta Laser semiconductor mai kunnawa galibi tana gane tsayin raƙuman ruwa ta hanyar canza sigogi na zahiri na resonator. Waɗannan sigogi sun haɗa da fihirisar ratsawa, tsayin rami, da zaɓin yanayi. Takamaiman hanyoyin daidaitawa sun haɗa da kunna alluran ɗaukar hoto, kunna yanayin zafi, kunna injina da kunna wutar lantarki. Kowace hanya tana da nata ƙayyadaddun tsarin nata na jiki da haɓakar lissafi, kuma zaɓin hanyar daidaitawa da ta dace yana buƙatar la'akari da takamaiman buƙatun aikace-aikacen, kamar kewayon daidaitawa, saurin daidaitawa, ƙuduri da kwanciyar hankali.