Study of Third Order Optical Nonlinearity in DASPB Dye-Doped Polymer Films Using CW Laser

Saudi Journal of Engineering and Technology (SJEAT), 2(1), 32-48. (ISSN: 2415-6272). Publishers: Scholars Middle East Publishers. DOI: 10.21276/sjeat.2017.2.1.4.

17 Pages Posted: 1 May 2017

See all articles by Shubhrajyotsna Aithal

Shubhrajyotsna Aithal

Srinivas Institute of Management Studies

P. S. Aithal

Srinivas Institute of Management Studies

G. Bhat

Srinivas Institute of Management Studies

Date Written: January 25, 2017

Abstract

The optimum self-focussing materials with an intensity-dependent refractive index and the realization of the ability of these materials to produce intensity dependent phase shift in all-optical photonic devices have become a topic of continuous investigation. Many organic materials including dye-doped polymer films are creating interest due to their advantages in terms of enhanced efficiency, and optimum mechanical properties to fabricate reliable devices. In this paper, we have studied the nonlinear optical properties like nonlinear absorption and nonlinear refraction of a two-photon fluorescent dye DASPB doped in Polymethyl methacrylate-methacrylic acid (PMMA-MA) polymer matrix using open aperture and closed aperture Z-scan experimental methods by means of low power continuous wave (CW) laser beam.The optical limiting properties of these films are also studied using Type 1 and Type 2 configurations at different input powers using continuous wave (CW) laser beams of 532 nm wavelength. The nonlinear refractive index n2, nonlinear absorption coefficient β, changes in refractive index with input intensity, and the magnitude of third-order optical nonlinearity of the dye-doped film are experimentally determined. The saturated output power for type 1 and type 2 optical limiting are determined. The input limiting threshold and saturated output power level for both type 1 and type 2 optical limiting configurations are recorded. DASPB dye-doped in PMMA-MA polymer film has shown saturation absorption at lower input irradiance and reverse saturation absorption along with two-photon absorption at higher input irradiance and hence found to be a potential candidate for the third harmonic property based photonic devices.

Keywords: Organic nonlinear material, Dye-doped polymer films, Optical limiting, Open and closed aperture Z scan, DASPB doped PMMA-MA films

Suggested Citation

Aithal, Shubhrajyotsna and Aithal, P. S. and Bhat, G., Study of Third Order Optical Nonlinearity in DASPB Dye-Doped Polymer Films Using CW Laser (January 25, 2017). Saudi Journal of Engineering and Technology (SJEAT), 2(1), 32-48. (ISSN: 2415-6272). Publishers: Scholars Middle East Publishers. DOI: 10.21276/sjeat.2017.2.1.4.. Available at SSRN: https://ssrn.com/abstract=2960029

Shubhrajyotsna Aithal

Srinivas Institute of Management Studies ( email )

Srinivas Campus, Mangaladevi Road
Pandeshwar
Mangalore, 575001
India

P. S. Aithal (Contact Author)

Srinivas Institute of Management Studies ( email )

Srinivas Campus
Pandeshwar
Mangalore, Mangalore 575001
India
9343348392 (Phone)

HOME PAGE: http://www.srinivasuniversity.ac.in

G. Bhat

Srinivas Institute of Management Studies

Srinivas Campus, Mangaladevi Road
Pandeshwar
Mangalore, 575001
India

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