Affiliation:
1. Nanjing University of Science and Technology
Abstract
Abstract
Delivering the highest power among the visible diodes, semiconductor lasers at 450 nm have been extensively applied in biomedical and micro-processing fields. However, the edge-emitting inherence that gives birth to the divergent and ununiform profile largely prohibits the practice due to the fiber coupling and pumping difficulty. To address these challenges, we propose and demonstrate a scheme that is both robust and cost-effective. A laser spot with 3×3 mm2 profile, 0.86 mrad divergence and 87.28% uniformity is experimentally achieved. Further simulation reveals that the coupling efficiency into a S460-HP single-mode fiber by a 20-mm focus-lens can reach 58.35%.
Publisher
Research Square Platform LLC
Reference29 articles.
1. Coldren, L.A., Corzine, S.W., Masanovic, M.L.: Diode Lasers and Photonic Integrated Circuits. John Wiley & Sons (2012)
2. Masui, S., Nakatsu., Y., Kasahara., D., Nagahama, S.: Recent improvement in nitride lasers. Proc. SPIE 10104, 101041H (2017)
3. Optimization of pump structure parameters in LDA side-pumped solid state laser;Han Y;J. Appl. Opt.,2014
4. Development of a high-power blue laser (445 nm) for material processing;Wang H;Opt. Lett.,2017
5. Toward Long-Distance Underwater Wireless Optical Communication Based on A High-Sensitivity Single Photon Avalanche Diode;Chen H;IEEE Photonics J.,2020