Whispering gallery mode microlaser at liquid Helium temperature

被引：21
作者：
Treussart, F
Ilchenko, VS
Roch, JF
Domokos, P
Hare, J
Lefevre, V
Raimond, JM
Haroche, S
机构：
[1] Ecole Normale Super, Dept Phys, Lab Kastler Brossel, F-75231 Paris 05, France
[2] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119899, Russia
[3] Hungarian Acad Sci, Crystal Phys Res Lab, H-1502 Budapest, Hungary
来源：
JOURNAL OF LUMINESCENCE | 1998年 / 76-7卷
关键词：
monolithic microcavities; microlaser; cavity quantum electrodynamics;
D O I：
10.1016/S0022-2313(97)00175-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the realization of neodymium-doped silica microsphere laser, of diameters in the range 50-100 mu m. Following very low threshold observed at room temperature (absorbed pump power of 200 nW), we present the new cryogenic setup operating at 2K. Very high quality factor Q > 3 x 10(8) has been preserved in a 50 mu m diameter microsphere immersed in superfluid Helium. Preliminary results on lasing at this temperature have also been obtained as a first step towards a 'thresholdless' regime. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：670 / 673
页数：4
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