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    • 1. 发明申请
    • Nonlinear optical (NLO) crystals with a beryllium oxide (BeO2) structure
    • 具有氧化铍(BeO2)结构的非线性光学(NLO)晶体
    • US20020155060A1
    • 2002-10-24
    • US09791008
    • 2001-02-22
    • Thomas A. ReynoldsTheodore AlekelDouglas A. Keszler
    • C01F001/00C01F003/02
    • C01F3/00C01F3/02G02F1/3551
    • In one embodiment of the present invention, the material is a non-linear optical compound with a beryllium oxide (BeO2) framework or superstructure. This new NLO material has the general chemical formula (nullinull1-3 Mnulli1)(nulljnull1-3 Mnullj2)BeO2, nullnullFormula 1wherein M1 and M2 are mono- and di-valent metal ions respectively; wherein (nullinull1-3 nulli)nullX and ranges from 0 to 2, (nulljnull1-3 nullj)nullY and ranges from 0 to 1, (hereinafter referred to as nullMBEOnullcompounds). Another embodiment of the present invention satisfies the generally formula (nullinull1-3 Mnulli1)BeO2, nullnullFormula 2 wherein M1 is a mono-valent metal ion; and wherein (nullinull1-3 nulli)nullX and ranges from 0 to 2; and yet another embodiment of the present invention satisfies the general formula (nulljnull1-3 Mnullj2)BeO2, nullnullFormula 3 wherein M2 is a di-valent metal ion; and wherein (nulljnull1-3 nullj)nullY and ranges from 0 to 1. Mono- and di-valent metal ions, M1 and M2, that are suitable for forming compounds satisfying the general formula are preferably independently selected from the group consisting of Groups IA and IIA, however other mono- and di-valent cations may be used so long as the material has a non-centrosymmetric arrangement. The best results are achieved by independently selecting M1 from the group consisting of lithium, sodium, potassium, rubidium, and cesium; and M2 from the group consisting of magnesium, calcium, and strontium. Examples of nonlinear optical materials satisfying the general formula include, but are not limited to, Na2BeO2, Li2BeO2, K2BeO2, and Cs2BeO2.
    • 在本发明的一个实施方案中,该材料是具有氧化铍(BeO 2)骨架或上层结构的非线性光学化合物。 这种新的NLO材料具有通用的化学式:<1-in-line-formula>(SIGMAi = 1-3 Malphai1)(SIGMAj = 1-3Mbetaj2)BeO2,式1 (SIGMAj = 1-3Mbetaj2)BeO2,式3 其中M2是 二价金属离子; 并且其中(SIGMAj = 1-3 betaj)= Y并且为0至1.适用于形成满足通式的化合物的单价和二价金属离子M1和M2优选独立地选自 的组IA和IIA,然而可以使用其它一价和二价阳离子,只要该材料具有非中心对称的排列。 通过独立地从由锂,钠,钾,铷和铯组成的组中选择M1来实现最佳结果; 和由镁,钙和锶组成的组中的M2。 满足通式的非线性光学材料的实例包括但不限于Na 2 BeO 2,Li 2 BeO 2,K 2 B 2 O 2和Cs 2 BeO 2。