χ(2) polarization induced in molecular glass of conjugated compound by all-optical poling

✍ Scribed by Naoto Tsutsumi; Koji Nakatani

• Book ID: 104073176
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 315 KB
• Volume: 259
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2005.09.018

✦ Synopsis

The paper presents the first report on v (2) polarization induced in molecular glass of conjugated compound by all-optical poling. Transparent thin film of molecular glass of 1,4-bis [2-[4-[N,N-di(p-tolyl)amino]phenyl]vinyl]benzene (BTAPVB) was prepared using a spin-cast technique. Dipolar as well as octupolar components in BTAPVB contributed to the formation of photoinduced v (2) polarization. Growth rate of v (2) polarization has good linear relation with E x 4 E 2x , which suggested that the simultaneous processes of two-photon (x + 2x) and three-photon (x + x + x) excitation on the same electronic level contributed to the formation of photoinduced v (2) polarization.