Study of Degenerate Four-Wave Mixing in Disperse Orange Dye-Doped Polymer Film

Advanced Materials Research (AMR) Journal, ISSN: 1662-8985, Trans Tech Publications (TTP), Switzerland. Vol. 584 (2012) pp 526-530.

Posted: 29 Nov 2017

See all articles by P. S. Aithal

P. S. Aithal

Srinivas University

Shubhrajyotsna Aithal

Srinivas University

G. Bhat

Srinivas Institute of Management Studies

Date Written: October 25, 2012

Abstract

Nonlinear optical phase conjugation by degenerate four-wave mixing (DFWM) is an important technique with applications in many fields of science and technology. Phase conjugation by Degenerate four-wave mixing is observed in Disperse Orange-25 dye doped in Polymethyl methacrylate – metacrylic acid (PMMA-MA) polymer film under low-power, continuous-wave laser irradiation. A maximum phase conjugate efficiency of 0.22% has been obtained for probe beam intensity at 0.11 W/cm2. Phase conjugation is observed for both parallel- and orthogonally-polarized probe and pump beams. The maximum PC reflectivity is achieved when the angle between probe and forward pump beam is 7 degrees. The effects of dye concentration, intensity of backward, forward pump and inter beam angle between probe and forward pump beam on phase conjugation reflectivity are also studied. PC signal strength first increases and then decreases. PC reflectivity is increased by increasing the intensity of the backward and forward pump beam. The polarization and intensity profile are verified to be preserved in the conjugate signal. The predominant phase conjugation signal is attributed to the facts that reverse saturable absorption and large third order susceptibility of the dye molecules.

Keywords: Degenerate Four Wave Mixing, Dye Doped Polymer, Optical Phase Conjugation, Saturation Absorption

Suggested Citation

Aithal, P. S. and Aithal, Shubhrajyotsna and Bhat, G., Study of Degenerate Four-Wave Mixing in Disperse Orange Dye-Doped Polymer Film (October 25, 2012). Advanced Materials Research (AMR) Journal, ISSN: 1662-8985, Trans Tech Publications (TTP), Switzerland. Vol. 584 (2012) pp 526-530. . Available at SSRN: https://ssrn.com/abstract=3077225

P. S. Aithal (Contact Author)

Srinivas University ( email )

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

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

Shubhrajyotsna Aithal

Srinivas University ( email )

Srinivas Campus, Mangaladevi Road
Pandeshwar
Mangalore, 575001
India

G. Bhat

Srinivas Institute of Management Studies

Srinivas Campus, Mangaladevi Road
Pandeshwar
Mangalore, 575001
India

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