Visible lasers

In my recent work, I have been developing visible lasers by frequency doubling the output of Raman fiber lasers. By leveraging the high efficiency and wavelength flexibility of cascaded Raman scattering in optical fibers, I generate near-infrared laser light, which is then frequency-doubled using nonlinear crystals such as LBO to produce coherent visible output. This approach allows for compact, fiber-based visible laser sources with good beam quality and tunability, making them suitable for applications in bioimaging, spectroscopy, and quantum optics. The system design involves careful management of phase matching conditions and thermal effects to ensure stable second-harmonic generation, while also optimizing fiber design for low-loss Raman conversion.