- 作者: 刁正如 ; 黃龍池 ; 文在川
- 作者服務機構: 高雄醫學院化學系
- 中文摘要: We examine the nonlinear optical properties of solutions of 9,10-anthraquinone, 1,4-dihydroxy-anthraquinone, 5,8-dichloro-l,4-dihydroxy-anthraquinone and 1,4-bisethyl amino-anthraquinone by means of the intensity-dependent transmission and the Z-scan method with 532nm 8 ns pulses. The results demonstrated that the 9,10-anthraquinone displayed a two-photon absorption (TPA) character. The molecular TPA cross section of this compound is estimated as .sigma./sub 2/ = 7.22 * 10/sup -19/cm/sup 4//GW or .sigma.'/sub 2/ = 26.96 * 10/sup -48/cm/sup 4//photon/s, respectively, and an essential state of 'm/sup 1/Ag', which should be located near the 2.omega. virtual transition state, is predicted. On the other hand, the effective excited-state nonlinear refractive coefficients /sub 2/n/sup eff/ of these anthraquinones are found to be -10/sup -10/ esu, which are comparable with those highly conjugated planar molecules of tetrabenzporphyrins and phthalocyanines.
- 英文摘要: --
- 中文關鍵字: Two Photon Absorption; Nonlinear Refraction; Z Scan; Anthraquinone
- 英文關鍵字: 二質子吸收;非線性反射;Z掃描;