Unidirectional high intensity narrow-linewidth lasing from a planar random microcavity laser

被引：59

作者：

Song, QH ^{[1
]}

Liu, LY ^{[1
]}

Xiao, SM ^{[1
]}

Zhou, XC ^{[1
]}

Wang, WC ^{[1
]}

Xu, L ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab Adv Photon Mat & Devices, Dept Opt Sci & Engn, Sch Informat Sci & Engn, Shanghai 200433, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.96.033902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Lasing was achieved in a new type of random laser: the planar random microcavity laser. The laser consists of a planar microcavity with a random gain layer. Optical confinement by the two-dimensional random cavity and the one-dimensional planar microcavity drastically reduces the number of resonant modes. As a result, the laser output is highly directional (the divergence angle is 1.68 degrees) with an extremely narrow-linewidth and ultralow threshold. All these phenomena are explained in terms of the coupling of random cavity modes and planar microcavity modes. The results demonstrate an important step towards applications of random lasers.

引用

页数：4

共 25 条

[1] Spectral and spatial narrowing of the emission of silicon nanocrystals in a microcavity [J].