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http://hdl.handle.net/2289/5960| Title: | Spectral dispersion of ultrafast optical limiting in Coumarin-120 by white-light continuum Z-scan |
| Authors: | Anand, Benoy Roy, Nivya Siva Sankara Sai, S. Philip, Reji |
| Keywords: | Absorption spectra Multiphoton absorption Optical dispersion Ultrafast measurements |
| Issue Date: | May-2013 |
| Publisher: | American Institute of Physics |
| Citation: | Applied Physics Letters, 2013, Vol.102, p203302 |
| Abstract: | Measurement of the wavelength dispersion of optical limiting in materials can provide invaluable information useful for laser safety device applications. However, it can be a tedious task when conventional tunable laser sources like the optical parametric amplifier are employed for excitation. Here we report the spectral dispersion of ultrafast optical limiting in the laser dye Coumarin-120 in the wavelength region 630 to 900 nm, measured in a single Z-scan, using the white-light continuum as the excitation source. Optical limiting is found to arise from two-photon absorption, and its spectrum agrees very well in shape with the linear absorption spectrum. |
| Description: | Open Access |
| URI: | http://hdl.handle.net/2289/5960 |
| ISSN: | 0003-6951 1077-3118(Online) |
| Alternative Location: | http://dx.doi.org/10.1063/1.4807151 |
| Copyright: | 2013 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 | |
|---|---|---|---|---|
| 2013_ApplPhysLett_V102_203302.pdf | Open Access | 1.04 MB | Adobe PDF | View/Open |
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