Thermal lens and non-linear optical absorption study of a-SiH films

被引:5
作者
Messias, DN [1 ]
Zanatta, AR [1 ]
Catunda, T [1 ]
机构
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
关键词
D O I
10.1016/j.jnoncrysol.2004.08.174
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Thermal effects on optical properties and non-linear optical absorption have been studied in hydrogenated amorphous silicon films using dual beam thermal lens technique. A change of the thermal lens signal, from positive to negative, with increase of the excitation power at some wavelengths, has been observed. The thermal conductivity and thermal diffusivity were K = (2.6 +/- 0.1) x 10(-3) W/cm K and D = (1.9 +/- 0.1) x 10(-3) cm(2)/s, respectively. Moreover, we observed a decay in the transmission signal, which was fit with two exponential functions, related to thermal effects, and competition between the creation of photo induced defects and their thermal annealing. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:230 / 234
页数:5
相关论文
共 16 条
  • [1] Thermal conductivity of hydrogenated amorphous silicon
    Attaf, N
    Aida, MS
    Hadjeris, L
    [J]. SOLID STATE COMMUNICATIONS, 2001, 120 (12) : 525 - 530
  • [2] BAESSO ML, 1994, J APPL PHYS, V75, P3733
  • [3] Evaluation of the thermal conductivity of porous silicon layers by an optical pump-probe method
    Bernini, U
    Lettieri, S
    Maddalena, P
    Vitiello, R
    Di Francia, G
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (05) : 1141 - 1150
  • [4] FERRARO JR, 1982, FOURIER TRANSFORM IN, V3
  • [5] Optical characterization of hydrogenated silicon thin films using interference technique
    Globus, T
    Ganguly, G
    Cabarrocas, PRI
    [J]. JOURNAL OF APPLIED PHYSICS, 2000, 88 (04) : 1907 - 1915
  • [6] THE SATURATION OF LIGHT-INDUCED DEFECTS IN HYDROGENATED AMORPHOUS-SILICON
    ISOMURA, M
    WAGNER, S
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 141 (1-3) : 204 - 215
  • [7] CW LASER CRYSTALLIZATION OF AMORPHOUS-SILICON - THERMAL OR ATHERMAL PROCESS
    IVANDA, M
    FURIC, K
    GAMULIN, O
    PERSIN, M
    GRACIN, D
    [J]. JOURNAL OF APPLIED PHYSICS, 1991, 70 (08) : 4637 - 4639
  • [8] A MODEL FOR CW LASER-INDUCED MODE-MISMATCHED DUAL-BEAM THERMAL LENS SPECTROMETRY
    JUN, S
    LOWE, RD
    SNOOK, RD
    [J]. CHEMICAL PHYSICS, 1992, 165 (2-3) : 385 - 396
  • [9] Mode-mismatched thermal lens spectrometry for thermo-optical properties measurement in optical glasses: a review
    Lima, SM
    Sampaio, JA
    Catunda, T
    Bento, AC
    Miranda, LCM
    Baesso, ML
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 2000, 273 (1-3) : 215 - 227
  • [10] FEMTOSECOND ENERGY-TRANSFER IN A-SI-H
    MOURCHID, A
    VANDERHAGHEN, R
    HULIN, D
    FAUCHET, PM
    [J]. PHYSICAL REVIEW B, 1990, 42 (12): : 7667 - 7670