AI Article Synopsis
- - The study presents a Yb:CALYO laser that successfully produces sub-200 fs pulses with over 20-W average power, achieving 153-fs pulses at 21.5 W using an 89 W pump.
- - It boasts impressive performance metrics, such as a peak power of 1.6 MW and a single pulse energy of 0.27 µJ, along with minimal fluctuations in output power during testing.
- - Additionally, the laser demonstrated high efficiency in second harmonic generation, achieving 59% conversion efficiency and the highest average output power reported from a femtosecond mode-locked bulk oscillator to date.
Article Abstract
We report on the demonstration of a pure Kerr-lens mode-locked Yb:CALYO laser which can directly deliver sub-200 fs pulses with more than 20-W average power. With an incident pump power of 89 W, 153-fs pulses were generated with an average power of 21.5 W at a repetition rate of 77.9 MHz. The corresponding peak power and single pulse energy were 1.6 MW and 0.27 µJ, respectively. The stable operation of the mode-locking was confirmed by very small fluctuations in both spectrum and output power recorded over an hour. Second harmonic generation (SHG) was conducted with 59% conversion efficiency, which indicated that the high-power mode-locking pulses are of good quality. Stable Kerr-lens mode-locking (KLM) with 156-fs pulse duration and 27.2-W average power was also achieved with 109-W pump power. To the best of our knowledge, this is the highest average output power ever reported from a femtosecond mode-locked bulk oscillator.
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| http://dx.doi.org/10.1364/OL.501843 | DOI Listing |
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