Abstract
Currently, the achievable average power from single-mode Yb-doped fiber lasers is in the multi-kW range [1]. However, the transmission range or the spectral gain of the active medium often limits the output power of highly demanded laser sources at uncommon wavelengths. Nonlinear frequency conversion represents a versatile approach to extend the spectral range at high power levels and is thus beneficial for wavelength-dependent applications. Compared to optical parametric oscillators (OPOs) the Raman laser technology is less complex and does not require management of phase matching. Furthermore, the spatial-hole-burning-free characteristic of the Raman gain provides an advantage for narrow band, high power operation [2]. Industrial CVD-diamond is an attractive medium for Raman frequency conversion and especially suitable for high power regions due to its unique combination of thermal and optical properties [3]. Using a second-Stokes setup lowers the threshold and increases the obtainable wavelength shift ever further [4]. Here, we employ this technology to achieve record power at 1478 nm in cw-operation.
© 2019 IEEE
PDF ArticleMore Like This
Matthias Heinzig, G. Palma-Vega, Benjamin Yildiz, Till Walbaum, Thomas Schreiber, Ramona Eberhardt, and Andreas Tünnermann
NTu3A.2 Nonlinear Optics (NLO) 2019
Matthias Heinzig, G. Palma-Vega, Till Walbaum, Thomas Schreiber, Ramona Eberhardt, and Andreas Tunnermann
AW1A.4 Advanced Solid State Lasers (ASSL) 2018
Xuezong Yang, Ondrej Kitzler, David J. Spence, Robert J. Williams, Zhenxu Bai, Soumya Sarang, Lei Zhang, Yan Feng, and Richard P. Mildren
ca_11_1 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2019