Two-photon absorption of femtosecond laser pulses in GaS crystals

被引：9

作者：

Allakhverdiev, KR ^{[1
]}

机构：

[1] TUBITAK, Marmara Res Ctr, Inst Elect, TR-41470 Gebze, Kocaeli, Turkey

来源：

OPTICS COMMUNICATIONS | 1998年 / 149卷 / 1-3期

关键词：

semiconductors; optical properties; non-linear optics;

D O I：

10.1016/S0030-4018(97)00722-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Experimental results of the influence of high-power density (up to I-0=400 MW/cm(2)), ultrashort laser pulses with duration of 42 fs (FWHM, E = 1.98 eV) on the transient transmission change of layered GaS crystals at room temperature are reported. The strong absorption at Delta t=0 (zero time delay between pump and probe pulse) is identified as being due to two-photon direct interband transitions. The estimated value of the two-photon absorption coefficient is beta(dir) = (0.6 +/- 0.2) x 10(-3) cm/MW. (C) 1998 Elsevier Science B.V.

引用

页码：64 / 66

页数：3

共 9 条

[1] DIRECT AND INDIRECT 2-PHOTON PROCESSES IN LAYERED SEMICONDUCTORS [J].

ADDUCI, F ;

CATALANO, IM ;

CINGOLANI, A ;

MINAFRA, A .

PHYSICAL REVIEW B, 1977, 15 (02) :926-931

[2]

ALLAKHVERDIEV K, 1990, JETP LETT+, V51, P164

[3]

ALLAKHVERDIEV K, IN PRESS SOLID STATE

[4] SPLITTING AND COUPLING OF LATTICE MODES IN LAYER COMPOUNDS GASE, GAS, AND GASE-CHI-S1-CHI [J].

HAYEK, M ;

BRAFMAN, O ;

LIETH, RMA .

PHYSICAL REVIEW B, 1973, 8 (06) :2772-2779

[5] REFINEMENT OF 2H GAS BETA-TYPE [J].

KUHN, A ;

CHEVY, A ;

CHEVALIER, R .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1976, 32 (MAR15) :983-984

[6]

KURZ H, 1985, SOLID STATE ELECT, V31, P5391

[7]

MASCHKE K, 1983, LANDOLTBORNSTEIN NUM, V17, P9

[8] A NEW VARIETY OF GAS, RHOMBOHEDRAL 3R METASTABLE - FORMATION AND STRUCTURAL STUDY [J].

PARDO, MP ;

FLAHAUT, J .

MATERIALS RESEARCH BULLETIN, 1987, 22 (03) :323-329

[9]

SEIBERT K, 1990, 20TH P INT C PHYS SE, V3, P1981

← 1 →