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Title: | Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se/As2S3 thin film structures |
Authors: | Adarsh, K.V. Sangunni, K.S. Suchand Sandeep, C.S. Philip, Reji Kokenyesi, S. Takats, V. |
Issue Date: | Jul-2007 |
Publisher: | American Institute of Physics |
Citation: | Journal of Applied Physics, 2007, Vol. 102, 026102 |
Abstract: | We have studied the nonlinear optical properties of nanolayered Se/As2S3 film with a modulation period of 10 nm and a total thickness of 1.15 µm at two [1064 nm (8 ns) and 800 nm (20 ps)] wavelengths using the standard Z-scan technique. Three-photon absorption was observed at off-resonant excitation and saturation of two-photon absorption at quasiresonant excitation. The observation of the saturation of two-photon absorption is because the pulse duration is shorter than the thermalization time of the photocreated carriers in their bands and three-photon absorption is due to high excitation irradiance. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/3343 |
ISSN: | E-ISSN: 1089-7550 P-ISSN(s): 0021-8979; 0148-6349 |
Alternative Location: | http://dx.doi.org/10.1063/1.2753581 |
Copyright: | 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
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2007 Jou. Appl. Phys. V102 p26102.pdf | Open Access | 316.54 kB | Adobe PDF | View/Open |
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