Laser oscillations with pumping-independent ultrahigh cavity quality factors in evanescent-wave-coupled-gain microsphere dye lasers

被引：17

作者：

An, K

Moon, HJ

机构：

[1] Seoul Natl Univ, Sch Phys, Seoul 151747, South Korea

[2] Sejong Univ, Dept Opt Engn, Seoul 143747, South Korea

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 04期

关键词：

WGM; ultrahigh-Q microsphere; evanescent-wave-coupled gain; microcavity laser; WHISPERING-GALLERY MODES; SILICA-MICROSPHERE; MICROCAVITY LASER; RESONATORS;

D O I：

10.1143/JPSJ.72.773

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report laser oscillations in whispering-gallery modes (WGMs) of a microsphere with its cavity quality factor Q unchanged for varied optical pumping intensities well above the laser threshold. Laser gain was present only in the evanescent-wave region of the lasing WGM around the microsphere equator, and thus pumping-induced Q degradation could be minimized, resulting in Q values maintained at 8(2) x 10(9) regardless of the pumping strength.

引用

页码：773 / 776

页数：4

共 15 条

[1]

Barber PW, 1990, LIGHT SCATTERING SMA, P25

[2]

Berman P.R., 1994, CAVITY QUANTUM ELECT

[3] Coupling nanocrystals to a high-Q silica microsphere:: Entanglement in quantum dots via photon exchange -: art. no. 032307 [J].