Kumar, G. Ravindra ; Rajgara, F. A. ; Rangwala, S. A. (1995) Optical nonlinearity in a mode-locking dye: optical limiting and four wave mixing Chemical Physics Letters, 245 (2-3). pp. 287-291. ISSN 0009-2614
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/000926...
Related URL: http://dx.doi.org/10.1016/0009-2614(95)01007-V
Abstract
We report the optical nonlinearity resonantly induced by picosecond laser excitation in Kodak 9740 mode-locking dye. The observed nonlinearity is due to the participation of high-lying singlet states. The specific processes studied are optical limiting and phase conjugation. We infer that the mechanism underlying the limiting behaviour is due to two-photon absorption, and obtain a value for the two-photon absorption coefficient β. Further, we report the intensity dependence of the phase conjugate signal and obtain the corresponding third-order susceptibility.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 29696 |
| Deposited On: | 23 Dec 2010 05:34 |
| Last Modified: | 04 Jun 2011 09:47 |
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