Near-infrared optical gain and stimulated emission in organic-compound-doped polymer waveguides

Takeyuki Kobayashi; Jean-Baptiste Savatier; Grace Jordan; Werner J. Blau; Yasuhiro Suzuki; Toshikuni Kaino

doi:10.1117/12.532907

18 June 2004 Near-infrared optical gain and stimulated emission in organic-compound-doped polymer waveguides

Takeyuki Kobayashi, Jean-Baptiste Savatier, Grace Jordan, Werner J. Blau, Yasuhiro Suzuki, Toshikuni Kaino

Proceedings Volume 5351, Organic Photonic Materials and Devices VI; (2004) https://doi.org/10.1117/12.532907
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

Abstract

We have successfully incorporated a near-infrared-emitting compound, 2-(6-(4-Dimethylaminophenyl)-2,4-neopentylene-1,3,5-hexatrienyl)-3-methyl-benzothiazolium Perchlorat, into poly(1-vinyl-2-pyrrolidone)-base planar waveguides. The variable-stripe-length method is employed to deduce the net gain coefficient of the waveguides, 1 cm in length, doped with 0.5 wt.% of the compound. The gain spectroscopy has revealed a moderate net modal gain of 2.6 cm^-1at 820 nm for the pump fluence of 22.6 μJ/cm² (3.8 kW/cm²). The waveguides have exhibited lasing at 820 nm when they are transversely photoexcited at 532 nm with a nanosecond Nd: YAG laser. The Fresnel reflection at the polymer-air interfaces acts as a low-finesse Fabry-Perot cavity. The threshold for lasing has been found to be 24.5 μJ/cm² (4.1 kW/cm²).

Citation Download Citation

Takeyuki Kobayashi, Jean-Baptiste Savatier, Grace Jordan, Werner J. Blau, Yasuhiro Suzuki, and Toshikuni Kaino "Near-infrared optical gain and stimulated emission in organic-compound-doped polymer waveguides", Proc. SPIE 5351, Organic Photonic Materials and Devices VI, (18 June 2004); https://doi.org/10.1117/12.532907

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