Random Laser Action in Semiconductor Powder

H. Cao, Y. G. Zhao, S. T. Ho, E. W. Seelig, Q. H. Wang, Robert P. H. Chang

Research output: Contribution to journalArticle

1351 Citations (Scopus)

Abstract

We report the first observation of random laser action with coherent feedback in semiconductor powder. Since the scattering mean free path is less than the emission wavelength, recurrent light scattering arises and provides coherent feedback for lasing. Discrete lasing modes have been observed above the threshold. The dependence of the lasing threshold intensity on the excitation volume agrees with the random laser theory. Laser emission from the powder could be observed in all directions. This observation also provides direct evidence for the existence of recurrent scattering of light.

Original languageEnglish
Pages (from-to)2278-2281
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number2-11
Publication statusPublished - Mar 15 1999

Fingerprint

lasing
lasers
thresholds
scattering
mean free path
light scattering
wavelengths
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cao, H., Zhao, Y. G., Ho, S. T., Seelig, E. W., Wang, Q. H., & Chang, R. P. H. (1999). Random Laser Action in Semiconductor Powder. Physical Review Letters, 82(2-11), 2278-2281.

Random Laser Action in Semiconductor Powder. / Cao, H.; Zhao, Y. G.; Ho, S. T.; Seelig, E. W.; Wang, Q. H.; Chang, Robert P. H.

In: Physical Review Letters, Vol. 82, No. 2-11, 15.03.1999, p. 2278-2281.

Research output: Contribution to journalArticle

Cao, H, Zhao, YG, Ho, ST, Seelig, EW, Wang, QH & Chang, RPH 1999, 'Random Laser Action in Semiconductor Powder', Physical Review Letters, vol. 82, no. 2-11, pp. 2278-2281.
Cao H, Zhao YG, Ho ST, Seelig EW, Wang QH, Chang RPH. Random Laser Action in Semiconductor Powder. Physical Review Letters. 1999 Mar 15;82(2-11):2278-2281.
Cao, H. ; Zhao, Y. G. ; Ho, S. T. ; Seelig, E. W. ; Wang, Q. H. ; Chang, Robert P. H. / Random Laser Action in Semiconductor Powder. In: Physical Review Letters. 1999 ; Vol. 82, No. 2-11. pp. 2278-2281.
@article{d9382e0aa58f4ff7afcf2e329e3f16d9,
title = "Random Laser Action in Semiconductor Powder",
abstract = "We report the first observation of random laser action with coherent feedback in semiconductor powder. Since the scattering mean free path is less than the emission wavelength, recurrent light scattering arises and provides coherent feedback for lasing. Discrete lasing modes have been observed above the threshold. The dependence of the lasing threshold intensity on the excitation volume agrees with the random laser theory. Laser emission from the powder could be observed in all directions. This observation also provides direct evidence for the existence of recurrent scattering of light.",
author = "H. Cao and Zhao, {Y. G.} and Ho, {S. T.} and Seelig, {E. W.} and Wang, {Q. H.} and Chang, {Robert P. H.}",
year = "1999",
month = "3",
day = "15",
language = "English",
volume = "82",
pages = "2278--2281",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2-11",

}

TY - JOUR

T1 - Random Laser Action in Semiconductor Powder

AU - Cao, H.

AU - Zhao, Y. G.

AU - Ho, S. T.

AU - Seelig, E. W.

AU - Wang, Q. H.

AU - Chang, Robert P. H.

PY - 1999/3/15

Y1 - 1999/3/15

N2 - We report the first observation of random laser action with coherent feedback in semiconductor powder. Since the scattering mean free path is less than the emission wavelength, recurrent light scattering arises and provides coherent feedback for lasing. Discrete lasing modes have been observed above the threshold. The dependence of the lasing threshold intensity on the excitation volume agrees with the random laser theory. Laser emission from the powder could be observed in all directions. This observation also provides direct evidence for the existence of recurrent scattering of light.

AB - We report the first observation of random laser action with coherent feedback in semiconductor powder. Since the scattering mean free path is less than the emission wavelength, recurrent light scattering arises and provides coherent feedback for lasing. Discrete lasing modes have been observed above the threshold. The dependence of the lasing threshold intensity on the excitation volume agrees with the random laser theory. Laser emission from the powder could be observed in all directions. This observation also provides direct evidence for the existence of recurrent scattering of light.

UR - http://www.scopus.com/inward/record.url?scp=0033558563&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033558563&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033558563

VL - 82

SP - 2278

EP - 2281

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2-11

ER -