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://doi.org/10.1016/0009-2614(95)01007-V
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: | 121127 |
| Deposited On: | 12 Jul 2021 05:15 |
| Last Modified: | 12 Jul 2021 05:15 |
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