Hoʻolālā ala optical o nā lasers pulsed rectangular

Hoʻolālā ala optical o ka huinahānā lasers pulsed

ʻIke holoʻokoʻa o ka hoʻolālā ala Optical

ʻO kahi laser fiber dissipative soliton resonant thulium-doped mode-locked dual-wavelength passive i hoʻokumu ʻia ma kahi ʻano aniani apo fiber nonlinear.

2. Ka wehewehe ʻana o ke ala ʻōniʻoniʻo

ʻO ka lua-nalu nalu dissipative soliton resonant thulium-dopedlaser fiberhoʻohana i kahi hoʻolālā kūkulu lua i ke ʻano "8" (Kiʻi 1).

ʻO ka ʻaoʻao hema ka loop unidirectional nui, ʻoiai ʻo ka ʻaoʻao ʻākau he ʻano aniani fiber optical nonlinear. ʻO ka loop unidirectional hema e komo pū ana me kahi mea hoʻokaʻawale pūʻolo, kahi fiber optical 2.7m thulium-doped (SM-TDF-10P130-HE), a me kahi coupler fiber optical band 2 μm me kahi coefficient coupling o 90:10. Hoʻokahi polarization-dependent Isolator (PDI), ʻelua Polarization Controllers (Polarization controllers: PC), kahi 0.41m Polarization-maintenance Fiber (PMF). Hoʻokō ʻia ke ʻano aniani apo fiber optic nonlinear ma ka ʻākau ma ka hoʻopili ʻana i ka mālamalama mai ka loop unidirectional hema i ke aniani apo fiber optic nonlinear ma ka ʻākau ma o kahi coupler optical 2 × 2 me kahi coefficient o 90:10. ʻO ke ʻano aniani apo fiber optical nonlinear ma ka ʻākau e komo pū ana me kahi fiber optical 75-mika ka lōʻihi (SMF-28e) a me kahi mea hoʻokele polarization. Hoʻohana ʻia kahi fiber optical mode hoʻokahi 75-mika e hoʻonui i ka hopena nonlinear. Maanei, hoʻohana ʻia kahi coupler fiber optical 90:10 e hoʻonui i ka ʻokoʻa pae nonlinear ma waena o ka hoʻolaha ʻana o ka ʻaoʻao clockwise a me ka counterclockwise. ʻO ka lōʻihi holoʻokoʻa o kēia ʻano nalu pālua he 89.5 mika. Ma kēia hoʻonohonoho hoʻokolohua, hele mua ke kukui pamu ma o kahi beam combiner e hiki ai i ka gain medium thulium-doped optical fiber. Ma hope o ka thulium-doped optical fiber, hoʻopili ʻia kahi coupler 90:10 e hoʻopuni i ka 90% o ka ikehu i loko o ka lua a hoʻouna i 10% o ka ikehu i waho o ka lua. I ka manawa like, ua hana ʻia kahi kānana Lyot birefringent me kahi fiber optical mālama polarization i loaʻa ma waena o ʻelua mau mea hoʻokele polarization a me kahi polarizer, kahi e pāʻani ai i kahi hana i ka kānana ʻana i nā nalu spectral.

3. ʻIke hope

I kēia manawa, aia ʻelua mau ʻano hana maʻamau no ka hoʻonui ʻana i ka ikehu pulse o nā lasers pulsed. ʻO kekahi ala e hoʻemi pololei i nā hopena nonlinear, me ka hoʻohaʻahaʻa ʻana i ka mana kiʻekiʻe o nā pulses ma o nā ʻano hana like ʻole, e like me ka hoʻohana ʻana i ka hoʻokele dispersion no nā pulses i hoʻolōʻihi ʻia, nā oscillators chirped nui, a me nā lasers pulsed beam-splitting, a pēlā aku. ʻO kekahi ala e ʻimi ai i nā ʻano hana hou e hiki ke ʻae i ka hōʻiliʻili ʻana o ka pae nonlinear, e like me ke ʻano like ponoʻī a me nā pulses rectangular. Hiki i ke ʻano hana i ʻōlelo ʻia ma luna ke hoʻonui pono i ka ikehu pulse o kalaser pulsedi nā ʻumi o nā nanojoules. ʻO ka dissipative soliton resonance (Dissipative soliton resonance: DSR) kahi ʻano hana hoʻokumu impulse rectangular i hāpai mua ʻia e N. Akhmediev et al. i ka makahiki 2008. ʻO ke ʻano o nā pulse dissipative soliton resonance, ʻoiai e mālama ana i ka amplitude mau, ʻo ka laulā pulse a me ka ikehu o ka pulse rectangular non-wave e hoʻonui monotonically me ka hoʻonui ʻana o ka mana pump. ʻO kēia, i kekahi ʻano, e uhaʻi ana i ka palena o ke kumumanaʻo soliton kuʻuna ma ka ikehu pulse hoʻokahi. Hiki ke hoʻokō ʻia ka dissipative soliton resonance ma ke kūkulu ʻana i ka saturated absorption a me ka reverse saturated absorption, e like me ka nonlinear polarization rotation effect (NPR) a me ka nonlinear fiber ring mirror effect (NOLM). ʻO ka hapa nui o nā hōʻike e pili ana i ka hanauna o nā dissipative soliton resonance pulses e pili ana i kēia mau ʻano hana laka ʻelua.