Optical damage resistance and refractive indices in near-stoichiometric MgO-doped LiNbO3

被引:75
作者
Nakamura, M
Higuchi, S
Takekawa, S
Terabe, K
Furukawa, Y
Kitamura, K
机构
[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan
[2] Sci Univ Tokyo, Dept Mat Sci & Technol, Noda, Chiba 2788510, Japan
[3] Oxide Corp, Kitakoma, Yamanashi 4080044, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2002年 / 41卷 / 1AB期
关键词
optical damage; refractive index; OH-absorption; stoichiometric MgO-doped LiNbO3;
D O I
10.1143/JJAP.41.L49
中图分类号
O59 [应用物理学];
学科分类号
摘要
The optical damage resistances of near-stoichiometric LiNbO3 (LN) crystals doped with MgO were investigated at lambda = 532 nm. Their refractive indices were also measured in the wavelength range from 440 to 1050 nm, from which Sellmeier's equations were derived. While the congruent LN (CLN) crystal required 5 mol% MgO to suppress the optical damage, the near-stoichiometric LN (SLN) crystal doped with I mol% MgO showed no optical damage up to the input intensity of 2 MW/cm(2). The ordinary refractive indices (n(o)) of MgO-doped SLN crystals decreased with MgO doping concentration up to 4.6 mol%. In contrast, the extraordinary refractive indices (n(o)) of MgO-doped SLN crystals were found to be almost independent of MgO doping concentration up to 4.6 mol%. With respect to optical device design, it is advantageous that n(e) of MgO-doped SLN crystal is almost independent of MgO doping concentration up to 4.6 mol% and that the SLN crystal needs only I mol% MgO to suppress optical damage.
引用
收藏
页码:L49 / L51
页数:3
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