Laser ine simba guruine chimiro cheMOPA chine fiber yese
Mhando huru dzema fiber lasers dzinosanganisira single resonator, beam combination uye master oscillating power amplifier (MOPA). Pakati padzo, MOPA structure yave imwe yenzvimbo dzinonyanya kutsvagurudzwa nekuda kwekukwanisa kwayo kuita basa rayo repamusoro.laser inoputikakubuda kwesimba rine upamhi hwepulse hunogadzirisika uye frequency yekudzokorora (inonzi upamhi hwepulse uye frequency yekudzokorora).
Nheyo yekushanda kweMOPA laser ndeiyi inotevera: Iyo huru oscillator (MO) inzvimbo yembeu inoshanda zvakanyanya.laser ye semiconductoriyo inogadzira chiedza chechiratidzo chembeu chine maparamita anogadziriswa kuburikidza nekushandura kwepulse zvakananga. Chinodzora chikuru cheField Programmable gate Array (FPGA) chinoburitsa masaini emagetsi emagetsi ane maparamita anogadziriswa, ayo anodzorwa nedhiraivha yedhiraivha kuti ashandise sosi yembeu uye kupedzisa modulation yekutanga yechiedza chembeu. Mushure mekugamuchira mirairo yekudzora kubva kubhodhi guru rekutonga reFPGA, dunhu redhiraivha repump rinotanga sosi yepombi kuti rigadzire chiedza chepombi. Mushure mekunge chiedza chembeu nechiedza chepombi zvabatanidzwa nebeam splitter, zvinopinzwa muYb3+ -doped double-clad optical fiber (YDDCF) mumodule ye optical amplification yematanho maviri. Munguva iyi, maion eYb3+ anotora simba rechiedza chepombi kuti agadzire population inversion distribution. Zvadaro, zvichibva pamisimboti yekuwedzera mafungu ekufamba uye kuburitsa zvinokurudzirwa, chiedza chechiratidzo chembeu chinowana simba rakawanda mumodule yekuwedzera mafungu maviri, pakupedzisira zvichiburitsa simba rakawanda.laser inoputika ne nanosecondNekuda kwekuwedzera kwesimba repamusoro, chiratidzo chekurova kwemoyo chakawedzerwa chinogona kusangana nekumanikidzwa kwehupamhi hwemwoyo nekuda kwemhedzisiro yekuwedzera. Mukushandiswa kwacho, maumbirwo ekuwedzera kwemoyo ane matanho akawanda anowanzo shandiswa kuwedzera simba rekuburitsa uye kuwana kushanda zvakanaka.
Sisitimu yeMOPA laser circuit inoumbwa nebhodhi guru rekudzora reFPGA, pombi, sosi yembeu, bhodhi redunhu remutyairi, amplifier, nezvimwewo. Bhodhi guru rekudzora reFPGA rinofambisa sosi yembeu kuti ibudise mapuroteni emwenje yembeu isina kubikwa yeMW-level ine maparamita anogadziriswa nekugadzira masaini emagetsi epulse ane mawaveform anogadziriswa, hupamhi hwepulse (5 kusvika 200ns), uye mwero wekudzokorora (30 kusvika 900kHz). Chiratidzo ichi chinopinzwa kuburikidza neisolator kuenda kumodule ye optical amplification yematanho maviri yakagadzirwa ne preamplifier uye main amplifier, uye pakupedzisira inoburitsa laser yepfupi-pulse ine simba rakawanda kuburikidza ne optical isolator ine collimation function. Sosi yembeu ine photodetector yemukati kuti iongorore simba rekubuda munguva chaiyo uye idzosere kubhodhi guru rekudzora reFPGA. Bhodhi guru rekudzora rinodzora macircuit epump drive 1 ne2 kuti riite mashandiro ekuvhura nekuvhara epombi 1, 2 ne3. Kanamudziyo wekuona fotoKana ikatadza kuona chiedza chinobuda, bhodhi guru rinodzima pombi kudzivirira kukuvara kweYDDCF nemidziyo yemaziso nekuda kwekushaikwa kwechiedza chembeu.
Sisitimu yeMOPA laser optical path inoshandisa chimiro chefiber yese uye ine main oscillation module uye two-stage amplification module. Main oscillation module inotora semiconductor laser diode (LD) ine central wavelength ye1064nm, linewidth ye3nm, uye maximum continuous output power ye400mW sembeu, uye inoisanganisa nefiber Bragg grating (FBG) ine reflectivity ye99%@1063.94nm uye linewidth ye3.5nm kuti igadzire system yekusarudza wavelength. 2-stage amplification module inoshandisa reverse pump design, uye YDDCF ine core diameters ye8 ne30μm yakagadzirirwa se gain media. Coating pump absorption coefficients inoenderana ndeye 1.0 ne2.1dB/m@915nm, zvichiteerana.
Nguva yekutumira: Gunyana-17-2025