BaGa4Se7 Lu'ulu'u


  • sararin rukuni: Pc
  • Yanayin watsawa: 0.47-18μm
  • Babban NLO coefficient: d11 = 24 na yamma / V
  • Birefringence @ 2μm: 0.07
  • Ofar lalacewa (1μm, 5ns): 550MW / cm2
  • Bayanin Samfura

    Sigogin fasaha

    Bidiyo

    Kyakkyawan lu'ulu'u ne na BGSe (BaGa4Se7) shine analog ɗin selenide na mahaɗin chalcogenide BaGa4S7, wanda aka gano tsarin ƙirar orthorhombic a cikin 1983 kuma aka ba da rahoton IR NLO a cikin 2009, sabon ƙarfe ne na IR NLO. An samo ta ta hanyar fasahar Bridgman – Stockbarger. Wannan kristal din yana nuna watsawa sama da fadi da kewayon 0.47-18 μm, sai dai wani tsayayyen tsotsa a kusan 15 μm. 
    FWHM na (002) ƙwanƙwasa mai girgiza yana kusan 0.008 ° kuma watsawa ta cikin goge 2 mm mai kauri (001) yana kusa da 65% akan faɗin kewayon 1-14 μm. An auna nau'ikan kaddarorin thermophysical akan lu'ulu'u.
    Halin faɗaɗawar zafin jiki a cikin BaGa4Se7 ba ya nuna rashin ƙarfi mai ƙarfi tare da αa = 9.24 × 10−6 K − 1, αb = 10.76 × 10−6 K − 1, da αc = 11.70 × 10−6 K − 1 tare da akidodi uku masu kristal. . Farawar yaduwar zafi / haɓakar haɓakar zafi da aka auna a 298 K sune 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, tare da a, b, c matattarar kristal bi da bi.
    Bugu da ƙari, an auna ƙofar ɓarnar lalacewar saman ya zama 557 MW / cm2 ta amfani da laser Nd: YAG (1.064 μm) a ƙarƙashin yanayin nisan bugun jini 5 ns, mita 1 Hz, da D = 0.4 mm girman girman.
    BGSe (BaGa4Se7) lu'ulu'u yana ba da amsa na ƙarni na biyu na jituwa (SHG) wanda ya kai kusan sau 2-3 na AgGaS2. Damageofar lalacewar laser ta saman kusan sau 3.7 ne na na AgGaS2 lu'ulu'u a ƙarƙashin yanayi iri ɗaya.
    BGSe lu'ulu'u yana da babban mai saukin kamuwa, kuma yana iya samun fa'ida mai fa'ida don aikace-aikace a cikin yankin tsakiyar IR.Yana nuna terahertz phonon-polaritons da manyan marasa daidaito na zamani don tsara terahertz. 
    Abvantbuwan amfani ga IR Laser fitarwa:
    Ya dace da tushen famfo daban-daban (1-3μm)
    Hanyar fitarwa ta IR mai fa'ida (3-18μm)
    OPA, OPO, DFG, intracavity / extravity, cw / bugun bugun jini
    Mahimmin bayani: Tunda wannan wannan sabon nau'in lu'ulu'u ne, a cikin lu'ulu'u na iya samun 'yan kaɗan, amma ba mu yarda da dawowa ba saboda wannan lahani.

    rukunin sarari Pc
    Yanayin watsawa 0.47-18μm
    Babban NLO coefficient d11 = 24 na yamma / V
    Biregin Biyan kuɗi @ 2μm 0.07
    Ofar lalacewa (1μm, 5ns) 550MW / cm2