Threshold and slope efficiency of Nd0.5La0.5Al3 (BO3)4 ceramic random laser:: effect of the pumped spot size

被引：75

作者：

Bahoura, M ^{[1
]}

Morris, KJ ^{[1
]}

Noginov, MA ^{[1
]}

机构：

[1] Norfolk State Univ, Mat Res Ctr, Norfolk, VA 23504 USA

来源：

OPTICS COMMUNICATIONS | 2002年 / 201卷 / 4-6期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1016/S0030-4018(01)01697-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have experimentally found that in a random laser based on Nd0.5La0.5Al3(BO3)(4) scattering ceramic, the threshold pumping density decreases and the output slope efficiency increases with the increase of the diameter of the pumped spot. The experimental behavior is explained in terms of random photon's walk in an amplifying medium. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：405 / 411

页数：7

共 19 条

[1]

BALACHANDRAN RM, 1995, OSA TECHNICAL DIGEST, V15, P114

[2] Random laser action in semiconductor powder [J].

Cao, H ;

Zhao, YG ;

Ho, ST ;

Seelig, EW ;

Wang, QH ;

Chang, RPH .

PHYSICAL REVIEW LETTERS, 1999, 82 (11) :2278-2281

[3] Ultraviolet lasing in resonators formed by scattering in semiconductor polycrystalline films [J].

Cao, H ;

Zhao, YG ;

Ong, HC ;

Ho, ST ;

Dai, JY ;

Wu, JY ;

Chang, RPH .

APPLIED PHYSICS LETTERS, 1998, 73 (25) :3656-3658

[4] GENERATION OF SPATIALLY INCOHERENT SHORT PULSES IN LASER-PUMPED NEODYMIUM STOICHIOMETRIC CRYSTALS AND POWDERS [J].

GOUEDARD, C ;

HUSSON, D ;

SAUTERET, C ;

AUZEL, F ;

MIGUS, A .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1993, 10 (12) :2358-2363

[5] Low-cost nanopowders for phosphor and laser applications by flame spray pyrolysis [J].

Laine, RM ;

Hinklin, T ;

Williams, G ;

Rand, SC .

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2, 2000, 343-3 :500-510

[6]

LAROCHELLE S, 1997, OSA TECHNICAL DIGEST, V11, P143

[7] LASER ACTION IN STRONGLY SCATTERING MEDIA [J].

LAWANDY, NM ;

BALACHANDRAN, RM ;

GOMES, ASL ;

SAUVAIN, E .

NATURE, 1994, 368 (6470) :436-438

[8]

LETOKHOV VS, 1968, SOV PHYS JETP-USSR, V26, P835

[9]

LICHMANOV CM, 1999, B RUSSIAN ACAD SCI P, V63, P922

[10]

Markushev V. M., 1986, Soviet Journal of Quantum Electronics, V16, P281, DOI 10.1070/QE1986v016n02ABEH005792

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