Kuumbwa kwesystem ye fiber laser ine simba guru

Kuumbwa kwesystem ye fiber laser ine simba guru
1, Kuumbwa kwehurongwa
Laser ine simba guru ine zvikamu zvina: pombi inobva, pombi inosanganisa, gain fiber, uye laser output head
1.1 Kunobva pombi: Simba rekuburitsa simba redhiyesi relaser rimwe chete i10W~50W chete, uye madhiyesi 6~50 achabatanidzwa uye kurongedzwa zvichienderana nekudiwa; Kana paine huwandu hwakawanda hwemachipisi, spatial beam combination uye polarization beam combination zvichabatanidzwa kuwedzera simba. Simba redhiyesi repombi rimwe chete rinotangira pamakumi kusvika kumazana emawatts, uye kuti pave nekubuda kwehuwandu hwekilowatt, madhiyesi epombi anopfuura gumi anofanira kubatanidzwa akatevedzana (senge Ruike laser ichishandisa musanganiswa wemadhiyesi epombi gumi nerimwe).
1.2 Musanganiswa wepombi: Yakagadzirwa kuburikidza netekinoroji yekubatanidza fiber, mamodule akawanda epombi anobatanidzwa ne optically kuita fiber imwe chete.
1.3 Gain fiber: ine urefu hunowanzo pfuura mamita makumi matatu, ichakochekedzwa uye ichaiswa paplate yekupisa, kazhinji uchishandisa ytterbium doped double cladding structure: core diameter ye10-20 μ m, single mode/few mode waveguide, yakakochekedzwa nema ions e ytterbium; Iyo inner cladding dayameter inosvika 400 μ m uye inoshandiswa kutumira chiedza chepombi ye multi-mode.
1.4 Musoro weKubuda kweLaser: Une basa rekupedzisira kwekugadzirwa kwelaser uye unogona kubatanidzwa kumidziyo yekugadzirisa kuburikidza neinterface yakajairika.
2, musimboti wekushanda kwakakosha
2.1 Resonator yekuwedzera optical: yakagadzirwa nepearl yeBragg gratings (FBGs): grating ine reflection yakakwira (reflectivity>99%) inoratidza chiedza chewavelength yakatarwa (yakadai se1080nm) kudzokera ku gain fiber; Output coupled grating (reflectivity 10% ~ 50%) inoratidza zvishoma kuti irambe ichitenderera, uye inotumira zvishoma kuti igadzire output. Mwenje wepombi unokurudzira ytterbium ions kuti ibudise spontaneous emission, uye maphoton anosangana nezvinodiwa zvewavelength anowanzo wedzerwa pakati pegratings, zvichizopedzisira zvagadzira stable laser output.
2.2 Kusarudzwa kweMode kunovimbisa kunaka kwemwaranzi: Kune rumwe rutivi, zvichienderana nekuganhurirwa kwewaveguide yedhayamita diki yepakati, kutapurirana kwe fundamental mode chete ndiko kunobvumidzwa; Kune rumwe rutivi, nekushandisa high overlap pakati pe fundamental mode ne gain medium (ytterbium ions), pamwe nehunhu hwekurasikirwa kwakanyanya kwe higher-order modes, pamwe chete ne fiber bending design kuti iwedzere kusefa higher-order modes, high-quality fundamental mode output ne M² approaching 1 inozowanikwa pakupedzisira.