High-power, femtosecond, thermal-lens-shaped Yb:KGW oscillator | Zendy

Joel A. Berger | Zendy; Michael Greco | Zendy; W. Andreas Schroeder | Zendy

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High-power, femtosecond, thermal-lens-shaped Yb:KGW oscillator

Author(s) -

Joel A. Berger,

Michael Greco,

W. Andreas Schroeder

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.008629

Subject(s) - optics , femtosecond , lens (geology) , materials science , laser , mode locking , distributed bragg reflector , astigmatism , optoelectronics , physics

Thermal lens shaping for astigmatism compensation is extended to a high-power, diode-pumped, Yb:KGW laser by employing a gain crystal geometry designed for efficient polarized pumping. The 63MHz oscillator is soliton mode-locked with the aid of a saturable Bragg reflector to yield 250fs (347fs) pulses at an output power of 3.5W (5W). Frequency doubling of the 250fs pulses with an intrinsic efficiency >60% provides 1.65W of average green power.

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