Development of femtosecond Yb:KGW laser for applications in optical DNA sensor technology

Arkady Major; Virginijus Barzda; Paul A.E. Piunno; Sergei Musikhin; Ulrich J. Krull

doi:10.1117/12.628740

4 October 2005 Development of femtosecond Yb:KGW laser for applications in optical DNA sensor technology

Arkady Major, Virginijus Barzda, Paul A.E. Piunno, Sergei Musikhin, Ulrich J. Krull

Author Affiliations +

Proceedings Volume 5969, Photonic Applications in Biosensing and Imaging; 59690Q (2005) https://doi.org/10.1117/12.628740
Event: Photonics North, 2005, Toronto, Canada

Abstract

We report on development of frequency-doubled diode-pumped ultrashort pulse Yb:KGW laser operating at 520 nm with approximately 200 fs long pulses at a repetition rate of 15 MHz. For ~2 W of absorbed pump power at 980 nm, the laser delivers up to 30 mW of average power at fundamental wavelength of 1040 nm, corresponding to a pulse energy of 2 nJ. The laser radiation was then frequency-doubled in a single pass configuration within a nonlinear BIBO crystal to produce femtosecond green radiation at 520 nm with peak power of ~200 W. The generated second harmonic served as excitation source of optical DNA sensor based on fluorescence lifetime measurements using the time correlated single photon counting (TCSPC) technique.

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Arkady Major, Arkady Major, Virginijus Barzda, Virginijus Barzda, Paul A.E. Piunno, Paul A.E. Piunno, Sergei Musikhin, Sergei Musikhin, Ulrich J. Krull, Ulrich J. Krull, "Development of femtosecond Yb:KGW laser for applications in optical DNA sensor technology", Proc. SPIE 5969, Photonic Applications in Biosensing and Imaging, 59690Q (4 October 2005); doi: 10.1117/12.628740; https://doi.org/10.1117/12.628740

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