Low-threshold CW eye-safe vortex generation from an intracavity pump-wave off-axis pumped OPO
A low-threshold efficient setup for CW wavelength versatile vortex generation is proposed. The intracavity optical parametric oscillator is utilized for low-threshold operation. By using the pump-wave off-axis pumping for the signal-wave oscillator, high-order Hermite-Gaussian modes at the eye-safe region can be obtained, which can further generate a vortex via an astigmatism mode converter. The overall laser performance is additionally verified to be better by comparing it with the diode off-axis pumping method where the TEM<sub>1,0</sub> pump wave was generated first for the signal-wave TEM<sub>1,0</sub> mode oscillation. This method is expected to be further applied for more complicated structured light generation.
Authors
- Chun‐Yu Cho (ORCID: https://orcid.org/0000-0002-6591-5784)
- Yen-Pei Huang
- L. Y. Tsai
Publication Details
- Journal
- Optics Letters
- Published
- 2024-10-08
- DOI
- https://doi.org/10.1364/ol.541556
- Citations
- 5
- Primary Topic
- Orbital Angular Momentum in Optics
- Type
- article
- Field-Weighted Citation Impact
- 1.69