NONLINEAR EXCITED STATE ABSORPTION IN CADMIUM-PORPHYRIN-LIKE
SI JIN-HAI (司金海)a, YANG MIAO (杨淼)a, WANG YU-XIAO (王玉晓)a, ZHANG LEI (张雷)a, LI CHUN-FEI (李淳飞)a, WANG DUO-YUAN (王夺元)b, DONG SHI-MING (董世明)b, SUN WEN-FANG (孙文芳)b
a Department of Physics, Harbin Institute of Technology, Harbin 150001, China; b Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, China
Abstract Nonlinear absorption at 532 nm in a cadmium texaphyrin solution has been studied using 8ns and 23ps laser pulses. The experiments show that reverse saturable absorption occurs in the nanosecond case. For picosecond pulses, RSA occurs only at low fluences, and saturable absorption occurs at high fluences. A six-level model is proposed to explain these nonlinear absorption effects. Several photophysical parameters of excited states for cadmium texaphyrin, such as absorption cross-sections at 532nm and lifetime, have been evaluated by fitting theoretical calculations with the experimental results.
Received: 11 November 1993
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China.
Cite this article:
SI JIN-HAI (司金海), YANG MIAO (杨淼), WANG YU-XIAO (王玉晓), ZHANG LEI (张雷), LI CHUN-FEI (李淳飞), WANG DUO-YUAN (王夺元), DONG SHI-MING (董世明), SUN WEN-FANG (孙文芳) NONLINEAR EXCITED STATE ABSORPTION IN CADMIUM-PORPHYRIN-LIKE 1994 Acta Physica Sinica (Overseas Edition) 3 821
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.
