Optical nzira dhizaini yepolarized fibernhete-linewidth laser
1. Muchidimbu
1018 nm polarized faibha nhete-linewidth laser. Kushanda wavelength i1018 nm, simba rekubuda nelaser i104 W, iyo spectral wides ye3 dB uye 20 dB i ~ 21 GHz uye ~ 72 GHz zvakateerana, iyo polarization extinction ratio i> 17.5 dB, uye kunaka kwedanda kwakakwira (2 x M - 2 y62 uye A)Laser systemine kutsetseka kwe79% (∼1.63).
2. Tsanangudzo yenzira yeOptical
Mune apolarized faibha nhete-linewidth laser, iyo linearly polarized fiber laser oscillator inoumbwa nepeya yepolarization-inochengetedza fiber gratings uye 1.5-mita-yakareba 10/125 μm ytterbium-doped kaviri-clad polarization-kuchengetedza fiber senzira yekuwana. Iyo yekunyudza coefficient yeiyi optical fiber pa976 nm ndeye 5 dB/m. Iyo laser oscillator inopombwa ne976 nm wavelength-yakakiiwasemiconductor laserine simba guru re 27 W kuburikidza ne polarity-kuchengetedza (1 + 1) × 1 danda musanganisi. Iyo yakakwirira yekuratidzira grating ine reflectivity inopfuura 99%, uye 3 dB reflection bandwidth inenge 0.22 nm. Iyo yakaderera reflectivity ye grating ndeye 40%, uye 3 dB reflection bandwidth inenge 0.216 nm. Iyo yepakati inoratidzira wavelengths yeese ma gratings ari pa1018 nm. Kuenzanisa simba rekubuda relaser resonator uye ASE kudzvanya ratio, iyo yakaderera kutaridzika kwegiyo yakagadziridzwa kusvika 40%. Iyo muswe fiber ye-high-reflection grating inosanganiswa kune kuwana fiber, nepo muswe fiber yeyakaderera-reflection grating inotenderedzwa 90 ° uye yakasanganiswa kumuswe fiber ye cladding sefa. Nokudaro, nzvimbo yepamusoro-soro ye-fast-axis reflection wavelength ye-high-reflection grating inopindirana neinononoka-axis reflection wavelength ye-low-reflection grating. Nenzira iyi, imwe chete polarized laser inogona kutenderera mune resonant mhango. Chiedza chepombi chakasara mu optical fiber cladding chinopepetwa kunze ne-self-made cladding sefa yakasanganiswa mugomba resonant, uye iyo pigtail inobuda inopeperetswa ne8 ° kudzivirira kupera kwechiso mhinduro uye parasitic oscillation.
3. Ruzivo rwekumashure
Iyo chizvarwa meshini ye linearly polarized fiber lasers: Nekuda kwekushushikana birefringence, iyo pear-yakaita polarization-inochengetedza fiber ine maviri orthogonal polarization axes, inozivikanwa seyekukurumidza axis uye inononoka axis. Kazhinji, sezvo iyo refractive index yeanononoka axis yakakura kupfuura iyo yeaxis inokurumidza, iyo grating yakanyorwa pane polarization-kuchengetedza fiber ine maviri akasiyana epakati wavelengths. Iyo resonant mhango ye linearly polarized fiber laser inowanzo umbwa nembiri polarization-inochengetedza gratings. Iyo yavelengths ye-yakaderera-reflection grating uye yakakwirira-inotaridzika grating paaxis inokurumidza uye inononoka axis inopindirana. Kana iyo yekuratidzira bandwidth yepolarization-kuchengetedza grating yakamanikana zvakaringana, iyo yekufambisa spectra muakisi inokurumidza uye inononoka axis nzira inogona kupatsanurwa, uye ese mawavelength anogona kuzununguka mukati megomba resonant. Zvinoenderana neiyo mbiri-wavelength oscillation musimboti wepolarization-kuchengetedza grating, mukuyedza, iyo yakafanana welding nzira inogona kugamuchirwa kuti ibudirire. Munguva yekuputika, iyo polarization-kuchengetedza maaxes eiyo magirati maviri anowirirana. Neiyi nzira, iwo maviri epamusoro-anotapurirana epamusoro-anotarisisa grating anoenderana neaya eakadzika-reflection grating, uye nekudaro maviri-wavelength laser kubuda kunogona kuitika.
Mune chaiyo laser polarization-yekuchengetedza masisitimu, mutsara skew chiratidzo chakakosha chekuongorora hunhu hwekubuda kwemutsara polarized lasers. Kazhinji, nguva ye-high-reflectance grating yakakura kudarika ye-low-reflectance grating. Kuti uwane mutsara polarized laser ine yakakwira PER kukosha, imwe chete polarization peak inoda kuzununguka. Kana iyo inokurumidza axis yeyakaderera-reflectance grating iri padivi peanononoka axis ye-high-reflectance grating, Iyo yepakati wavelength mukukurumidza axis nzira yeyakadzika-reflection grating inoenderana neiyo inononoka axis nzira ye-high-reflection grating, nepo peak yekufambisa mune inononoka axis kutungamira kweiyo yakaderera-reflection inoenderana neiyo yakaderera-reflection. high-reflection grating. Nenzira iyi, imwe yepamusoro yekufambisa inogona kuzunguzwa. Saizvozvo, kana iyo inononoka axis ye-low-reflectance grating iri pamwe neakisi inokurumidza ye-high-reflectance grating, iyo yepakati yavelength yeinononoka axis ye-low-reflectance axis inoenderana neiyo yekukurumidza axis ye-high-reflectance grating, nepo kufambisa kwepamusoro kweiyo inokurumidza axis isingaenderane neiyo yakaderera axis. high-reflectance grating. Nenzira iyi, imwe yepamusoro yekufambisa inogona zvakare kuzunguzwa. Idzi nzira mbiri dziri pamusoro dzinogona kuwana mutsara polarized laser kubuda. Zvinoenderana neiyo imwechete-wavelength mutsara polarized laser oscillation musimboti wepolarization-kuchengetedza grating, mukuyedza, iyo orthogonal splicing nzira inogona kugamuchirwa kuti ibudirire. Kana iyo splicing Angle yepolarization-inochengetedza maaxes eiyo yakakwira ratidziro gireti uye yakaderera yekuratidzira grating iri 90 °, iyo yekufambisa peak muinononoka axis kutungamira kweyakakwirira kutarisisa gireti inoenderana nepamusoro pekutapurirana munzira inokurumidza axis yeyakaderera kuratidza grating, uye nekudaro kubuda kwe single-wavelerized fiber mutsara welaser inogona kugadzirwa.
Nguva yekutumira: Sep-12-2025