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We proposed a modified off-axis spectral beam combining method, based on the concept of selective feedback. A high reflectivity mirror with a fixed width was used to select and couple… Click to show full abstract
We proposed a modified off-axis spectral beam combining method, based on the concept of selective feedback. A high reflectivity mirror with a fixed width was used to select and couple back the optical modes in the external cavity. The emission power exceeding 20 W with M2 factors of 2.7 × 4.4 in the fast and slow axes was demonstrated. The beam quality of the system was improved by a factor of three to four compared with that of a single emitter, and a high brightness of 190 MW cm-2 str-1 was achieved.
Keywords:
beam combining;
selective feedback;
axis spectral;
high brightness;
spectral beam;
beam
Journal Title: Optics express
Year Published: 2018
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Journal Title: Optics express
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!