The improvement of the brightness of high-power semiconductor green laser pointer has promoted the development of various unforeseen technologies. Although this trend requires more innovation, there is reason to believe that innovation in semiconductor laser technology is far from complete. The well-known physics can further improve the performance of semiconductor lasers through continuous technological development. For example, quantum dot gain media can significantly improve efficiency compared to current quantum well devices.
Slow axis brightness offers another order of magnitude improvement potential. New packaging materials with improved thermal and expansion matching will provide the enhancements needed for continuous power adjustment and simplified thermal management. These key developments will provide a roadmap for the development of high-power semiconductor lasers in the coming decades.
Diode-pumped solid-state and fiber-optic green laser pointers. The improvement of high-power semiconductor lasers makes the development of downstream laser technology possible; in the field of downstream laser technology, semiconductor lasers are used to excite (pump) doped crystals (diode-pumped solid-state lasers) or doped fiber (fiber lasers). Although semiconductor lasers provide high-efficiency, low-cost laser energy, they have two key limitations: they do not store energy and have limited brightness.