LASER ACTION IN STRONGLY SCATTERING MEDIA

被引：1231

作者：

LAWANDY, NM ^{[1
]}

BALACHANDRAN, RM ^{[1
]}

GOMES, ASL ^{[1
]}

SAUVAIN, E ^{[1
]}

机构：

[1] BROWN UNIV,DEPT PHYS,PROVIDENCE,RI 02912

来源：

NATURE | 1994年 / 368卷 / 6470期

关键词：

D O I：

10.1038/368436a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

THE radiative properties of an atomic or molecular system may be altered significantly in the presence of coherent optical scattering1,2. In the course of investigating the radiative properties of a laser dye dispersed in a strongly scattering medium (a colloidal suspension of titanium dioxide particles), we have found that the emissions from such systems can exhibit spectral and temporal properties characteristic of a multimode laser oscillator, even though the systems contain no external cavity. The threshold excitation energy for laser action is surprisingly low. We suggest that these composite systems might find applications in laser instrumentation and photonics.

引用

页码：436 / 438

页数：3

共 6 条

[1]

Ambartsumyan R. V., 1970, PROGR QUANTUM ELECT, P109

[2]

Hill S. C., 1988, OPTICAL EFFECTS ASS, P3

[3] OBSERVATION OF INHIBITED SPONTANEOUS EMISSION IN A PERIODIC DIELECTRIC STRUCTURE [J].