Stimulated emission of sulforhodamine 640 doped DNA distributed feedback (DFB) laser devices

Zhou Yu; Yaling Zhou; David J Klotzkin; James G. Grote; Andrew J. Steckl

doi:10.1117/12.701429

7 February 2007 Stimulated emission of sulforhodamine 640 doped DNA distributed feedback (DFB) laser devices

Zhou Yu, Yaling Zhou, David J Klotzkin, James G. Grote, Andrew J. Steckl

Proceedings Volume 6470, Organic Photonic Materials and Devices IX; 64700V (2007) https://doi.org/10.1117/12.701429
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

Organic solid thin films of PMMA and surfactant-treated salmon deoxyribonucleic acid (DNA) were used as host materials to dope sulforhodamine (SRh) laser dye. Amplified Spontaneous Emission (ASE) was observed from the dye-doped thin films pumped by frequency-doubled Nd:YAG laser, with DNA host showed a lower ASE pump threshold. Distributed feedback (DFB) laser structures were fabricated on both dye-doped thin films for the 2^nd order emission of SRh at 650 nm. Stimulated Emission (Lasing) was obtained by pumping with a doubled Nd:YAG laser at 532 nm. The DNA DFB devices lasing threshold was 30&mgr;J/cm² or 3.75kW/cm². The emission linewidth decreased from ~ 30 nm in the ASE mode to < 0.4 nm in the lasing mode. The slope efficiency of the laser emission was ~ 1.2%. Similar emission linewidth change was observed in PMMA DFB devices while the lasing threshold was 53 &mgr;J/cm² or 6.63kW/cm² with a slope efficiency of ~0.63%.

Citation Download Citation

Zhou Yu, Yaling Zhou, David J Klotzkin, James G. Grote, and Andrew J. Steckl "Stimulated emission of sulforhodamine 640 doped DNA distributed feedback (DFB) laser devices", Proc. SPIE 6470, Organic Photonic Materials and Devices IX, 64700V (7 February 2007); https://doi.org/10.1117/12.701429

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