OPTICAL LIMITING EFFECT IN TWO PHTHALOCYANINES OBSERVED BY PICOSECOND PULSED LASER

• 来源期刊: 中国物理（英文版）
• 关键词: optical limiting reverse saturable absorption absorption
• 年，卷（期）: 2001,（12）
• 页码范围: 1139-1143
• 页数: 5页
• 语种: 英文

摘要

Optical limiting (OL) properties of two phthalocyanines were investigated by using picosecond laser pulses at 532nm. The relative ratios k of the absorption cross section of the first singlet excited state to that of the ground state were approximately obtained by the analysis of the experimental results in which the reverse saturable absorption model of the three-energy-level scheme was employed. A significant comparison with fullerene C60 was presented for OL. The OL mechanisms have been analysed in detail.