Chimiro chikuru che single-mode fiber laser

Chimiro chikuru chelaser yefaibha yemhando imwe chete

Kushanda kwakanaka kwe single-modelaser yefaibhazvinobva pakugadzirwa kwavo kwemukati chaiko. Kushanda pamwe chete kwakanaka pakati pezvikamu zvese ndiyo hwaro hwekuwana kuburitswa kwelaser kwakasimba uye kwemhando yepamusoro.

Semuenzaniso, laser ye976nm ine electro-optical conversion efficiency yakakwira inoshandiswa kuchaja fiber yakasanganiswa, uye ipapo mwenje wembeu we1064nm une beam quality yakanaka unoshandiswa kutungamira fiber yakasanganiswa yakasanganiswa kuti iburitse laser ye1064nm ine simba rakawanda. Kana simba relaser re1064nm rikawanda, simba rakawanda uye huwandu hwepombi zvinodikanwa.

Tsananguro yakadzama yezvikamu zvikuru

Pombi ndiyo sosi yesimba relaser, kazhinjilaser ye semiconductordiode, ine wavelength ye emission inoenderana ne absorption peak ye gain medium (semuenzaniso, ytterbium-doped fiber inoenderana ne wavelength ye 915nm kana 976nm). Single-mode laser inoda kuti pombi yechiedza ivewo ne high spatial coherence. Nokudaro, single-mode fiber-coupled laser diodes dzinowanzo shandiswa kuona kuti pombi inogona kupinzwa zvinobudirira mu fine single-mode fiber core.

2. Mafiber eGain ndiwo anonyanya kushandiswa pakugadzira laser uye anowanzova mafiber egirazi equartz ane zvinhu zvisingawanzoitiki zvepasi. Maion akajairika anosanganisira ytterbium (Yb³⁺), erbium (Er³⁺), thulium (Tm³⁺), nezvimwewo, zvinoenderana nemabhendi akasiyana-siyana ewavelength anobuda (akadai se1064nm, 1550nm, 2μm, nezvimwewo). Kureba kwefiber yegain kunofanirwa kugadzirwa nemazvo kuti ive nechokwadi chekuti pombi inopinza chiedza zvizere uku ichichengetedza opto-optical conversion inoshanda zvakanyanya.

3. Nzira inonyanya kushandiswa ye resonant cavity i fiber Bragg grating pair. Grating inoumbwa nekuisa optical fibers ku ultraviolet laser interference fringes, zvichikonzera shanduko yenguva dzose mu refractive index yepakati penzvimbo dzavo. Nekudzora nguva nehurefu hwe grating, central wavelength uye bandwidth ye reflection yayo zvinogona kudzorwa nemazvo. Iyi fiber yakazara resonant cavity structure haidi zvikamu zvakasiyana zvakaita se optical lenses, zvichiwedzera zvakanyanya kugadzikana uye kugona kwe anti-interference kwesystem.

4. Sisitimu yekuburitsa magirazi e beam collimation inowanzo kuwanikwa seri kwe grating yekuburitsa. Basa rayo nderekushandura laser yakasiyana-siyana inoburitswa kubva ku optical fiber kuita collimated parallel light kana kuiisa pamusoro pebasa. Sisitimu iyi inowanzo sanganisira ma lenses anozvitarisa ega kana mapoka ema lens madiki uye inoshandisa chimiro chakanyatsogadzirwa kuti ive nechokwadi chekuti kurongeka kwakarurama. Dhizaini ye optical yepamusoro inogona kuderedza kushanduka-shanduka uye kuve nechokwadi chekuti mwenje wekuburitsa unoramba uine kupararira kwakanaka kweGaussian.