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

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.

Citation Download Citation

Arkady Major, Virginijus Barzda, Paul A.E. Piunno, Sergei Musikhin, and 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); https://doi.org/10.1117/12.628740

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