Two-photon absorption coefficient dichroism in II--VI semiconductor crystals
Ma Hong(马红)a), Ma Guo-Hong(马国宏)a)†, Ma Hong-Liang(马洪良)b), and Tang Sing-Hai(唐星海)c)
a Department of Physics, Shanghai University, Shanghai 200444, China; b Instrumental Analysis & Research Center, Shanghai University, Shanghai 200444, China; c Department of Physics, National University of Singapore, Singapore 119260
Abstract Considering two beams propagate in semiconductor crystal, this paper discusses the polarization dependence of pump beam-induced intensity attenuation of probe beam due to two-photon absorption (TPA). Numerical calculation and experimental measurement demonstrate that TPA coefficient is polarization dependent. For homogeneous materials, probe beam attenuation arises from the imaginary part of diagonal and off-diagonal components of third-order nonlinear susceptibilities.
Fund: Project
supported by Science and Technology Commission of Shanghai municipal
(Grant No~ 06PJ14042), Shanghai Municipal Education Commission (Grant
No~06AZ089), and the
Shanghai Leading Academic Discipline Program (Grant No~T0104).
Cite this article:
Ma Hong(马红), Ma Guo-Hong(马国宏), Ma Hong-Liang(马洪良), and Tang Sing-Hai(唐星海) Two-photon absorption coefficient dichroism in II--VI semiconductor crystals 2007 Chinese Physics 16 3873
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
