Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/6205
Title: | Thermo-optic nonlinearity of the laser dye LDS 867 under low power CW laser excitation |
Authors: | Ann Mary, K.A. Sonia Mary, E.J. Vidyadharan, Viji Philip, Reji Unnikrishnan, N.V. |
Issue Date: | 17-Feb-2015 |
Publisher: | IOP Publishing Ltd. |
Citation: | IOP Conference Series: Materials Science and Engineering, 2015, Vol 73, p012055 |
Abstract: | Thermally induced optical nonlinearity of the laser dye LDS 867 is studied in ethanol solution using the self phase modulation and closed aperture z-scan techniques, employing a continuous wave low power He-Ne laser beam for excitation. The nonlinear optical (NLO) coefficients are obtained by analyzing the z-scan curve on the basis of the thermal lens model. The dye exhibits a negative thermal nonlinearity which can be inferred from the occurrence of a pre-focal peak followed by a post-focal valley in the z-scan. The large nonlinear refractive index (n2) measured at the excitation wavelength of 633nm reveals that the material is NLO active even at low excitation powers of less than 1 mW. Results indicate that LDS 867 is a promising material for optical power limiting applications. |
Description: | Open Access, Book Chapter from International Conference on Materials Science and Technology (ICMST 2012), 10–14 June 2012, Kerala, India |
URI: | http://hdl.handle.net/2289/6205 |
Alternative Location: | http://adsabs.harvard.edu/abs/2015MS%26E...73a2055M http://dx.doi.org/10.1088/1757-899X/73/1/012055 |
Copyright: | 2015 IOP Publishing Ltd. |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2015_IOPConf_73_012055.pdf | Open Access | 798.88 kB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.