Agate, B. and Kemp, A. and Brown, C.T.A. and Sibbett, W. (2002) Efficient, high repetition-rate femtosecond blue source using a compact Cr:LiSAF laser. Optics Express, 10 (16). pp. 824-831. ISSN 1094-4087Full text not available in this repository. (Request a copy from the Strathclyde author)
We present a practical route to designing a portable femtosecond blue light source that is rugged, compact and battery-powered. An opticaloptical second-harmonic generation (SHG) efficiency of 30% is reported using a diode-pumped, femtosecond Cr:LiSAF laser requiring only ~1.2W of electrical drive. 12mW of blue average power is generated using a 3mm KNbO3 crystal in a simple, single-pass extracavity geometry. The corresponding electrical-blue efficiency of 1% is, to our knowledge, the highest reported efficiency of any femtosecond blue source. Despite conditions of large group velocity mismatch, we show that the temporally-broadened blue pulses remain well within the femtosecond regime, at ~540fs.
|Keywords:||lasers, laser optics, nonlinear optics, harmonic generation, photonics, Optics. Light, Atomic and Molecular Physics, and Optics|
|Subjects:||Science > Physics > Optics. Light|
|Department:||Faculty of Science > Institute of Photonics|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||07 Feb 2008|
|Last modified:||03 Jun 2016 02:30|