Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
We demonstrate the generation of stable femtosecond vortices from a self-started Kerr-lens mode-locked Yb:YAG thin-disk oscillator. By using a defective mirror inscribed with a fine line, 218-fs Hermite-Gaussian (HG) pulses are delivered directly from the thin-disk oscillator with an average power of 12 W at the repetition rate of 105 MHz and subsequently converted to Laguerre-Gaussian (LG) vortices by a cylindrical-lens mode-converter. The average output power of the Hermite-Gaussian pulses is further improved to 19 W by applying a rectangular aperture. This is the highest, to the best of our knowledge, average power obtained from any mode-locked Hermite-Gaussian oscillator to date. This work provides an effective way to generating a high-order and high-power ultrafast vortex beam.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.541981 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
We demonstrate peak power and pulse energy scaling of Kerr-lens modelocking (KLM) Ho:YAG thin-disk lasers (TDLs) emitting at 2.1-µm wavelength. We compare different laser configurations to reach a maximum pulse energy of 1.
View Article and Find Full Text PDFWe present a cryogenic composite thin-disk oscillator based on a holmium-doped yttrium lithium fluoride (Ho:YLF) crystal that we believe is for the first time, with a hundred-watt-level near diffraction-limited laser output. Integrating the multi-pass pumping configuration and the cryogenic cooling technique, a maximum power of 128 W was achieved with an optical efficiency of 62.5% at 2 µm.
View Article and Find Full Text PDFThin-disk oscillators have made significant progress in high power and pulse energy generation, but their ability to achieve high repetition rates is limited, primarily due to the structure of the multi-pass pumping cavity and the requirement for large beam spot sizes within the cavity. In this Letter, we employed an asymmetric cavity structure and used a thin-disk crystal as an end mirror, successfully achieving repetition rates of 432 MHz and 520 MHz in Kerr-lens mode-locked Yb:YAG thin-disk oscillators, with corresponding output powers of 33 W and 36 W and pulse durations of 253 fs and 276 fs, respectively. These results represent the highest, to the best of our knowledge, repetition rates reported for mode-locked thin-disk oscillators to date.
View Article and Find Full Text PDFGeneration of tunable high-order vortex beams from a Hermite-Gaussian thin-disk laser.
Opt Express
January 2025
We demonstrate the generation of high-order, high-power vortex modes from a Hermite-Gaussian (HG) Yb:YAG thin-disk oscillator, with tunable mode orders ranging continuously from one to ten. To the best of our knowledge, this is the highest order of HG and vortex modes obtained using a thin-disk module. The output power for most of these modes reaches up to 10 W, setting a new benchmark for intracavity high-order HG mode generation.
View Article and Find Full Text PDFWe demonstrate the generation of stable femtosecond vortices from a self-started Kerr-lens mode-locked Yb:YAG thin-disk oscillator. By using a defective mirror inscribed with a fine line, 218-fs Hermite-Gaussian (HG) pulses are delivered directly from the thin-disk oscillator with an average power of 12 W at the repetition rate of 105 MHz and subsequently converted to Laguerre-Gaussian (LG) vortices by a cylindrical-lens mode-converter. The average output power of the Hermite-Gaussian pulses is further improved to 19 W by applying a rectangular aperture.
View Article and Find Full Text PDF