Likhoele tsa BaGa4Se7


  • sehlopha sa sebaka: Khomphutha
  • Phetiso mefuta e fapaneng: 0.47-18μm
  • Coefficient e kholo ea NLO: d11 = 24 thapama / V
  • Boitšoaro @ 2μm: 0.07
  • Tšenyo e haufi (1μm, 5ns): 550MW / cm2
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    Likristale tsa boleng bo phahameng tsa BGSe (BaGa4Se7) ke manaka a selenide ea chalcogenide komponeng BaGa4S7, eo sebopeho sa eona sa acentric orthorhombic se fumanoeng ka 1983 mme phello ea IR NLO e tlalehiloe ka 2009, ke kristale ea IR NLO e sa tsoa ntlafatsoa. E fumanoe ka mokhoa oa Bridgman – Stockbarger. Kristale ena e bonts'a phetisetso e phahameng ho feta mefuta e fapaneng ea 0.47-18 μm, ntle le tlhoro ea ho monya metsi e ka bang 15 μm. 
    FWHM ea (002) tlhoro e sisinyehang e ka ba 0.008 ° mme phetisetso ka poleiti ea 2 mm e teteaneng (001) e ka ba 65% ka bophara ba 1-14 μm. Mefuta e fapaneng ea thermophysical e ne e metoa ka likristale.
    Boitšoaro ba ho holisa mocheso ho BaGa4Se7 ha e bonts'e anisotropy e matla ka αa = 9.24 × 10−6 K-1, αb = 10.76 × 10−6 K-1, le αc = 11.70 × 10−6 K-1 hammoho le lilepe tse tharo tsa kristale . Mefuta e futhumetseng ea mocheso le mocheso oa mocheso o lekantsoeng ka 298 K ke 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, hammoho le a, b, c kristalelographic a selekane ka ho latellana.
    Ntle le moo, bokaholimo ba tšenyo ea laser bo ile ba lekanngoa e le 557 MW / cm2 ho sebelisoa laser ea Nd: YAG (1.064 μm) tlasa maemo a 5 ns pulse width, 1 Hz frequency, le D = 0.4 mm size size.
    BGSe (BaGa4Se7) kristale e bonts'a karabo ea phofo ea bobeli ea moloko oa li-harmonic (SHG) e ka bang makhetlo a 2-3 a AgGaS2. Bokantle ba tšenyo ea laser ke makhetlo a ka bang 3.7 a kristale ea AgGaS2 tlasa maemo a ts'oanang.
    BGSe kristale e na le ts'oaetso e kholo e se nang mohala, mme e kanna ea ba le tebello e pharaletseng ea lits'ebetso tse sebetsang bohareng ba IR. 
    Menyetla ya khumo IR tham mong bang laser:
    E loketse mohloli o fapaneng oa ho pompa (1-3μm)
    Lisebelisoa tse pharalletseng tsa IR (3-18μm)
    OPA, OPO, DFG, intracavity / extravity, cw / pulse pump
    Tsebiso ea bohlokoa: Kaha ena ke kristale ea mofuta o mocha, kristale e ka hare e na le methapo e fokolang, empa ha re amohele pusetso ka lebaka la bothata bona.

    sehlopha sa sebaka Khomphutha
    Phetiso mefuta e fapaneng 0.47-18μm
    Coefficient e kholo ea NLO d11 = 24 thapama / V
    Boitšoaro @ 2μm 0.07
    Tšenyo e haufi (1μm, 5ns) 550MW / cm2