Dark-field Z-scan technique with highly nonlinear absorbing materials: Application to porphyrins

• Published in: Journal of nonlinear optical physics & materials Vol. 25; no. 2; p. 1650020
• Main Authors: Chniti, Meherzia, Cassagne, Christophe, Wang, Hongzhen, Boudebs, Georges
• Format: Journal Article
• Language: English
• Published: Singapore World Scientific Publishing Company 01.06.2016; World Scientific Publishing Co. Pte., Ltd; World Scientific Publishing
• Subjects: Absorption; Engineering Sciences; Optics; Photonic; Physics; Porphyrins; Signal processing; nonlinear optical properties; Z-scan; porphyrins; Dark-field microscopy
• ISSN: 0218-8635; 1793-6624
• DOI: 10.1142/S021886351650020X

The newly introduced imaging Dark-field Z-scan (DFZ-scan) technique is applied here to demonstrate its ability to measure the optical third-order nonlinear (NL) index coefficient in the presence of nonlinear absorption (NLA). We present our experimental results for two compounds of Porphyrin molecul...