Numerical analysis of lasing output in organic thin film laser with photo-induced periodic gain structure

Satoshi Tanaka; Hieu Chi Ta; Hyuma Itakura; Heihachi Sato; Akira Watanabe; Seiichirou Hayakawa; Nobuaki Takahashi

doi:10.1117/12.502168

17 June 2003 Numerical analysis of lasing output in organic thin film laser with photo-induced periodic gain structure

Satoshi Tanaka, Hieu Chi Ta, Hyuma Itakura, Heihachi Sato, Akira Watanabe, Seiichirou Hayakawa, Nobuaki Takahashi

Proceedings Volume 5129, Fundamental Problems of Optoelectronics and Microelectronics; (2003) https://doi.org/10.1117/12.502168
Event: Fundamental Problems of Optoelectronics and Microelectronics, 2002, Vladivostok, Russian Federation

Abstract

Organic materials are becoming widely used in optical fields due to their many advantageous properties such as flexibility, ruggedness, and low cost. In particular, application of organic polymer to an optical amplifier and/or a laser oscillator has attracted much attention recently. In these circumstances, we have demonstrated a novel solid-state dye-laser by using organic thin film made of Rhodamine B (Rh-B)-doped UV-cured polymer as gain medium, in which distributed feedback operation has been achieved by inducing a periodic gain structure onto the gain medium. However, the characteristics of the lasing output of such a laser oscillator have still not been examined. In this paper we shall thus present a numerical analysis of lasing output of the solid-state dye laser with a photo-induced periodic-gain. Since in the photo-induced DFB operation an interference fringe of lightwave is used for pumping a periodic-gain stucture onto the gain medium, the output power strongly depends on the shape of the interference pattern. Using several parameters obtained in the experiments, dependences of output power on the visibility and average power of the pumping interference pattern are numerically calculated. In addition, the effects of gain saturation against the pump energy are also discussed from the viewpoint of practical applications.

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Satoshi Tanaka, Hieu Chi Ta, Hyuma Itakura, Heihachi Sato, Akira Watanabe, Seiichirou Hayakawa, and Nobuaki Takahashi "Numerical analysis of lasing output in organic thin film laser with photo-induced periodic gain structure", Proc. SPIE 5129, Fundamental Problems of Optoelectronics and Microelectronics, (17 June 2003); https://doi.org/10.1117/12.502168

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KEYWORDS

Visibility

Numerical analysis

Thin films

Oscillators

Polymers

Solid state lasers

Solid state physics

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