BaGa4Se7 Makhiristo


  • gulu lamlengalenga: Pc
  • Kutumiza osiyanasiyana: 0.47-18μm
  • Choyimira chachikulu cha NLO: d11 = 24 pm / V
  • Birefringence @ 2μm: 0.07
  • Zowonongeka (1μm, 5ns): 550MW / cm2
  • Mankhwala Mwatsatanetsatane

    Magawo luso

    Kanema

    Makhiristo apamwamba kwambiri a BGSe (BaGa4Se7) ndi analnino ya selenide ya chalcogenide compound BaGa4S7, yomwe mawonekedwe ake a orthorhombic adadziwika mu 1983 ndipo zotsatira za IR NLO zidanenedwa mu 2009, ndi IR NLO crystal yatsopano. Anapezeka kudzera mu njira ya Bridgman – Stockbarger. Kristalo imawonetsa kutulutsa kwakukulu pamitundu yonse ya 0.47-18 μm, kupatula gawo lokwanira pafupifupi 15 μm. 
    FWHM ya (002) yokhotakhota yomwe ili pamwamba ndi pafupifupi 0.008 ° ndipo kutumizidwa kudzera mu mbale yolemera 2 mm thick (001) ili mozungulira 65% kupitilira 1-14 μm. Katundu wosiyanasiyana wama thermophysical adayesedwa pamakristasi.
    Khalidwe lokulitsa la BaGa4Se7 silikuwonetsa anisotropy yolimba ndi αa = 9.24 × 10−6 K − 1, αb = 10.76 × 10 K6 K-1, ndi αc = 11.70 × 10 K6 K-1 pama nkhwangwa atatu a crystallographic . Matenthedwe osakanikirana / matenthedwe ophatikizika amtundu wa 298 K ndi 0.50 (2) mm2 s − 1 / 0.74 (3) W m-1 K-1, 0.42 (3) mm2 s − 1 / 0.64 (4) W m-1 K − 1, 0.38 (2) mm2 s − 1 / 0.56 (4) W m-1 K-1, motsatira a, b, c kristalo yolumikizana motsatana.
    Kuphatikiza apo, mawonekedwe owonongeka a laser adayesedwa kukhala 557 MW / cm2 pogwiritsa ntchito Nd: YAG (1.064 μm) laser pansi pazowonjezera za 5 ns pulse width, 1 Hz frequency, ndi D = 0.4 mm size.
    BGSe (BaGa4Se7) kristalo imawonetsa kuyankha kwachiwiri kwa harmonic m'badwo (SHG) womwe umakhala pafupifupi nthawi 2-3 ya AgGaS2. Malo owonongeka a laser ali pafupifupi nthawi za 3.7 za AgGaS2 kristalo momwemonso.
    Kristalo ya BGSe ili ndi chiopsezo chachikulu chosasunthika, ndipo itha kukhala ndi chiyembekezo chambiri chazomwe zingagwiritsidwe ntchito pakatikati pa IR. Zimawonetsa chidwi cha terahertz phonon-polaritons ndi ma coefficients apamwamba osapanga mzere wazaka za terahertz 
    Ubwino IR linanena bungwe laser:
    Oyenera zosiyanasiyana ikukoka gwero (1-3μm)
    Lonse lokonzekera IR linanena bungwe osiyanasiyana (3-18μm)
    OPA, OPO, DFG, intracavity / extravity, cw / pulse pumping
    Chidziwitsao Chofunika: Popeza iyi ndi kristalo wamtundu watsopano, mkatikati mwa kristalo atha kukhala ndi mizere ingapo, koma sitilola kubwezeredwa chifukwa cha vutoli.

    gulu lamlengalenga Pc
    Kutumiza osiyanasiyana 0.47-18μm
    Chowonjezera chachikulu cha NLO d11 = 24 pm / V
    Birefringence @ 2μm 0.07
    Zowonongeka (1μm, 5ns) 550MW / cm2