Abstract
High average power, ultrafast laser sources at 2.1 µm have great potential for numerous applications, for example, spectroscopy, nonlinear conversion to the mid-IR, THz, XUV, and for material processing. Particularly attractive are laser systems directly emitting at this wavelength, with no complex parametric nonlinear conversion stages. In this regard, Ho-doped materials are especially attractive because of their excellent thermal properties, simple quasi-three-level energy scheme, enabling high average powers. For applications requiring high repetition rates, high-power mode-locked oscillators are ideally suited. However, so far, short pulses were difficult to achieve with Ho-doped materials due to typically narrow-band emission spectra. In our recent work, we showed that Ho:CALGO is a promising new material to overcome this difficulty, with the demonstration of a SESAM modelocked laser with 8.7 W of average power and 369 fs of pulse duration [1], the pulse duration is limited by the small modulation depth of the SESAM. In the current work, we report a Kerr-lens mode-locked Ho: CALGO solid-state laser achieving 112 fs at high average power of 2 W, corresponding to a peak power of 173 kW. Additionally, we also studied the noise properties of this laser, indicating very low-noise operation.
© 2023 IEEE
PDF ArticleMore Like This
Weichao Yao, Yicheng Wang, Shahwar Ahmed, Martin Hoffmann, and Clara J. Saraceno
F1.5 Ultrafast Optics (UFO) 2023
P. Sévillano, R. Dubrasquet, F. Druon, P. Georges, D. Descamps, and E. Cormier
STu2E.1 CLEO: Science and Innovations (CLEO:S&I) 2014
Weichao Yao, Yicheng Wang, Sergei Tomilov, Martin Hoffmann, Shahwar Ahmed, Christoph Liebald, Daniel Rytz, Mark Peltz, Volker Wesemann, and Clara J. Saraceno
AW5A.3 Advanced Solid State Lasers (ASSL) 2022