Yakakwira-simba pulsed laser ine ese-fiber MOPA chimiro

High-simba pulsed laserine yose-fiber MOPA chimiro

Iwo makuru ekuumbwa marudzi efiber lasers anosanganisira imwechete resonator, danda musanganiswa uye master oscillating simba amplifier (MOPA) zvimiro. Pakati pavo, iyo MOPA chimiro chave chimwe chezvino tsvakiridzo hotspots nekuda kwekugona kwayo kuita yepamusoro-soro.pulsed laseryakabuda ine inogadziriswa pulse hupamhi uye kudzokorora frequency (inonzi pulse hupamhi uye kudzokorora frequency).

Musimboti wekushanda weMOPA laser wakaita seizvi: Iyo main oscillator (MO) imbeu inoshanda yepamusoro sosi.semiconductor laseriyo inogadzira chiedza chechiedza chembeu ine zvinogadziriswa parameters kuburikidza ne-direct pulse modulation. Iyo Field Programmable gedhi Array (FPGA) main control inobuda pulse current signals ine inogadziriswa parameters, iyo inodzorwa nedhiraivha yedhiraivha kuti ishandise mbeu yembeu uye kupedzisa yekutanga modulation yechiedza chembeu. Mushure mekugamuchira mirairo yekudzora kubva kuFPGA main control board, iyo pombi sosi yedhiraivha inotangisa pombi sosi kugadzira pombi mwenje. Mushure mekunge chiedza chembeu uye chiedza chepombi zvabatanidzwa nedanda rinoparadzanisa, ivo vanoiswa jekiseni muYb3 + -doped double-clad optical fiber (YDDCF) mune maviri-stage optical amplification module. Panguva iyi, Yb3+ ions inotora simba rechiedza chepombi kuti igadzire kugoverwa kwevanhu. Zvadaro, zvichibva pamisimboti yekufamba mafungu amplification uye yakasimudzwa kubuda, mwenje wembeu yemwenje unowana simba rakakura kuwana mune maviri-nhanho optical amplification module, pakupedzisira ichiburitsa yakakwirira-simba.nanosecond pulsed laser. Nekuda kwekuwedzera kwesimba repamusoro, iyo yakawedzera pulse siginecha inogona kuwana pulse wide compression nekuda kwekuwana clamping maitiro. Mumashandisirwo anoshanda, akawanda-nhanho amplification zvimiro anowanzo gamuchirwa kuti awedzere kuwedzera simba rekubuda uye kuwana kugona.

Iyo MOPA laser circuit system inoumbwa neFPGA main control board, pombi sosi, mbeu, mutyairi wedunhu bhodhi, amplifier, etc. Iyo FPGA main control board inotyaira sosi yembeu kuti ibudise MW-level mbishi mhodzi chiedza pulses ine inogadziriswa paramita nekugadzira pulse magetsi masaini ane inogadziriswa waveforms, pulse000005 uye pulse0005. 900kHz). Ichi chiratidzo chinoiswa kuburikidza neiyo isolator kune maviri-nhanho optical amplification module inoumbwa neye preamplifier uye main amplifier, uye pakupedzisira inoburitsa yakakwira-simba pfupi-pulse laser kuburikidza neiyo optical isolator ine collimation basa. Mbeu sosi ine yemukati photodetector yekutarisa inobuda simba munguva chaiyo uye kuidzosera kuFPGA main control board. Iyo hombe yekudzora bhodhi inodzora pombi inotyaira maseketi 1 uye 2 kuti iwane kuvhura nekuvhara mashandiro epombi masosi 1, 2 uye 3.photodetectorinotadza kuona chiratidzo chekubuda kwechiedza, iyo huru yekudzora bhodhi inovhara pombi sosi kudzivirira kukuvadzwa kweYDDCF nemidziyo yemaziso nekuda kwekushaikwa kwembeu yemwenje yekuisa.

Iyo MOPA laser optical path system inotora iyo-fiber chimiro uye ine huru oscillation module uye maviri-nhanho amplification module. Iyo hombe oscillation module inotora semiconductor laser diode (LD) ine yepakati wavelength ye1064nm, mutsara we3nm, uye yakanyanya kuenderera inobuda simba re400mW sesosi yembeu, uye inoisanganisa nefiber Bragg grating (FBG) ine reflectivity ye39.9.9 . kugadzira wavelength sarudzo system. Iyo 2-nhanho amplification module inotora reverse pombi dhizaini, uye YDDCF ine musimboti madhayamita e8 uye 30μm inogadziriswa sekuwana midhiya. Iyo inopindirana yekubatisa pombi yekubata coefficients ndeye 1.0 uye 2.1dB/m@915nm, zvichiteerana.