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We report on diode-pumped Sm:YLF lasers at 605 nm and 648 nm. Using a 3-W pump laser diode at 401 nm, we obtained 263 mW and 548 mW of total extracted powers at 605 nm and 648 nm, corresponding to slope efficiencies versus absorbed pump power of 11% and 22%, respectively.
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http://dx.doi.org/10.1364/OE.554022 | DOI Listing |
Phys Rev E
July 2025
Immanuel Kant Baltic Federal University, Baltic Center for Neurotechnology and Artificial Intelligence, Kaliningrad 236041, Russia.
We present an approach combining reservoir computing and nonlinear dynamics to replicate the behavior of stochastic systems, even when only partial observations are available. Unlike conventional RC applications, our approach systematically evaluates the conditions under which a system can be "strongly" cloned (exact trajectory prediction) versus "weakly" cloned (statistical replication), leveraging external noise excitation to infer hidden dynamics. By applying external noise and analyzing the system response, we demonstrate the feasibility of our approach both theoretically and experimentally.
View Article and Find Full Text PDFUnderstanding pump-induced lensing in laser amplifiers is important for power scaling of solid-state lasers with maintenance of high beam quality, however, there is still incomplete knowledge of the relative role of different lensing processes, particularly between thermally-induced lensing and excited-state population-induced lensing. In this study, we directly measure the transient dioptric lensing in the diode-pumped neodymium-doped yttrium vanadate (Nd:YVO) gain medium using a time-gated wavefront sensor. Pulsed pump-probe measurements of the transient growth and decay of pump-induced lensing clearly distinguish thermal and population lensing mechanisms by their different time signatures.
View Article and Find Full Text PDFWe report on the generation of sub-30 fs pulses from a diode-pumped Yb,Gd:YAP laser. Using soft-aperture Kerr-lens mode-locking, soliton pulses as short as 23 fs were achieved at 1082.3 nm, with an average output power of 45 mW at a repetition rate of 67.
View Article and Find Full Text PDFWe report on a continuous-wave (CW) praseodymium fluoride fiber laser delivering 10-watt level output power in the red spectral range. It employs a double-clad 0.8 mol% PrF-doped ZBLAN fiber as a gain medium and a high-power fiber-coupled 442-nm GaN laser diode module as a pump source.
View Article and Find Full Text PDFWe present an intra-cavity upconversion pumping scheme for Thulium lasers operating on the H → H transition. It is based on detuning the pump wavelength from the resonance of excited-state absorption, F → F, around 1 µm. This scheme is validated using a Tm:LiYF-based laser.
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