Efficient monolithic diamond Raman yellow laser at 572.5 nm

Abstract

A high-power Raman yellow laser with a wavelength of 572.5 nm is demonstrated. High-power Raman laser is always restricted by various thermal effects inside the Raman crystals. Based on the theoretical analyze about the thermal effects, the internal heat accumulation can be slightly adjusted by output transmittances. Yellow laser is achieved with the average output power of 9.2 W and the slope efficiency of 60.8%, used a monolithic diamond crystal, with high thermal conductivity, as the Raman medium. The corresponding results have impacts on promoting the application of yellow laser into the fields of medical treatment, laser display, and scientific investigation. • A high-power Raman yellow laser is demonstrated based on a monolithic diamond micro-cavity at wavelength of 572.5 nm. • Based on the theoretical analyze about the thermal effects, the internal heat accumulation can be slightly alleviated by optimizing output transmittances. • Yellow laser is achieved with the average output power of 9.2 W and the slope efficiency of 60.8%.