Abstract
Efficient generation of femtosecond pulses at 524 nm is demonstrated by the extracavity frequency doubling of the output of a diode-pumped femtosecond Yb3+: K-Y(WO4)(2) laser using a periodically poled LiTaO3 crystal. An average second-harmonic power of 120 mW is produced at an internal conversion efficiency of 40%. The temporal characteristics of the frequency-doubled pulses as a function of focusing conditions in a thick nonlinear crystal are investigated experimentally, and pulses as short as 225 fs are generated at a pulse repetition frequency of 86 MHz. © 2005 Optical Society of America.
Original language | English |
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Pages (from-to) | 1144-1146 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 30 |
Publication status | Published - 15 May 2005 |
Keywords
- YB-KYW LASER
- 2ND-HARMONIC GENERATION
- LITHIUM TANTALATE
- HIGHLY EFFICIENT
- CRYSTAL
- LITAO3