Excited-state absorption at 1.57 μm in U2+:CaF2 and Co2+:ZnSe saturable absorbers

被引：20

作者：

Burshtein, Z

Shimony, Y

Feldman, R

Krupkin, V

Glushko, A

Galun, E

机构：

[1] Arava Laser Lab, IL-86800 Mishor Yamin, DN Arava, Israel

[2] Electroopt Ind Ltd, ELOP, IL-76111 Rehovot, Israel

来源：

OPTICAL MATERIALS | 2001年 / 15卷 / 04期

关键词：

U2+: CaF2; Co2+: ZnSe; saturable absorbers; excited-state absorption;

D O I：

10.1016/S0925-3467(00)00044-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Appreciable excited-state absorption (ESA) in U2+:CaF2 and Co2+:ZnSe saturable absorbers was measured at lambda = 1.573 mum by optical transmission versus light fluence curves of 30-40 ns long pulses. The ground- and excited-state absorption cross-sections obtained were (9.15 +/- 0.3) x 10(-20) and (3.6 +/- 0.2) x 10(-20) cm(2), respectively, for U2+:CaF2, and (57 +/- 4) x 10(-20) and (12.5 +/- 1) x 10(-20) cm(2) for Co2+:ZnSe. Thus, ESA is not negligible in U2+:CaF2 and Co2+:ZnSe, as previously estimated. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：285 / 291

页数：7

共 12 条

[1]

BIRNBAUM M, 1997, OSA TRENDS OPTICS PH, V10, P148

[2] Excited-state absorption studies of Cr4+ ions in several garnet host crystals [J].