The weak and narrow absorption characteristics around 880nm have become research hotspots for high-brightness pump diodes, which can achieve spectral stability. These higher-performance green laser pointer can directly excite the upper laser level 4F3 / 2 in neodymium, reduce quantum defects, and improve the extraction of fundamental modes with higher average power, otherwise they will be limited by thermal lenses.
By the beginning of 2010, we have witnessed the high power scaling trend of single transverse mode 1064nm lasers and related series of frequency conversion lasers operating in the visible and ultraviolet bands. Due to the long high energy state life, these switching operations provide high pulse energy and peak power, making them ideal for ablation material processing and high precision micromachining applications. fiber-optic laser. Fiber lasers provide a more efficient way to convert the brightness of high-power semiconductor lasers.
Although wavelength multiplexing optics can convert relatively low-brightness semiconductor lasers into brighter semiconductor green laser pointers, this comes at the cost of increased spectral width and optomechanical complexity. Fiber lasers have proven to be particularly effective in photometric conversion.