DIRECT MEASUREMENTS OF NONLINEAR ABSORPTION AND REFRACTION IN SOLUTIONS OF PHTHALOCYANINES

被引:326
作者
WEI, TH
HAGAN, DJ
SENCE, MJ
VANSTRYLAND, EW
PERRY, JW
COULTER, DR
机构
[1] UNIV CENT FLORIDA,DEPT PHYS,ORLANDO,FL 32816
[2] CALTECH,JET PROP LAB,PASADENA,CA 91109
来源
APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY | 1992年 / 54卷 / 01期
关键词
D O I
10.1007/BF00331733
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report direct measurements of the excited singlet state absorption cross section and the associated nonlinear refractive cross section using picosecond pulses at 532 nm in solutions of phthalocyanine and naphthalocyanine dyes. By monitoring the transmittance and far field spatial beam distortion for different pulsewidths in the picosecond regime, we determine that both the nonlinear absorption and refraction are fluence (energy per unit area) rather than irradiance dependent. Thus, excited state absorption (ESA) is the dominant nonlinear absorption process, and the observed nonlinear refraction is also due to real population excitation.
引用
收藏
页码:46 / 51
页数:6
相关论文
共 23 条
  • [21] OFF-RESONANT 3RD-ORDER OPTICAL NONLINEARITIES OF METAL-SUBSTITUTED PHTHALOCYANINES
    SHIRK, JS
    LINDLE, JR
    BARTOLI, FJ
    HOFFMAN, CA
    KAFAFI, ZH
    SNOW, AW
    [J]. APPLIED PHYSICS LETTERS, 1989, 55 (13) : 1287 - 1288
  • [22] A SILICON PHTHALOCYANINE AND A SILICON NAPHTHALOCYANINE - SYNTHESIS, ELECTROCHEMISTRY, AND ELECTROGENERATED CHEMI-LUMINESCENCE
    WHEELER, BL
    NAGASUBRAMANIAN, G
    BARD, AJ
    SCHECHTMAN, LA
    DININNY, DR
    KENNEY, ME
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (24) : 7404 - 7410
  • [23] NONLINEAR-OPTICAL PROCESSES IN LOWER-DIMENSIONAL CONJUGATED STRUCTURES
    WU, JW
    HEFLIN, JR
    NORWOOD, RA
    WONG, KY
    ZAMANIKHAMIRI, O
    GARITO, AF
    KALYANARAMAN, P
    SOUNIK, J
    [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (04) : 707 - 720