Title :
Highly efficient green VECSEL with intra-cavity diamond heat spreader
Author :
Kim, J.Y. ; Cho, S. ; Lee, S.-M. ; Kim, G.B. ; Lee, J. ; Yoo, J. ; Kim, K.-S. ; Kim, T. ; Park, Y.
Author_Institution :
Photonics Project Team, Samsung Adv. Inst. of Technol., Suwon-Si Gyeonggi-Do
Abstract :
The effect of the birefringence of an intracavity diamond heat spreader on the lasing performance of a vertical external cavity surface emitting laser is investigated. The birefringence in the intra-cavity diamond caused considerable additional round-trip loss when a birefringent filter was inserted into the cavity. The effect of the birefringence of intra-cavity diamond can be reduced by rotation of the sample. By aligning the axes of the diamond birefringence and those of the Brewster surfaces, a pump-power limited green output power of 5.2 W was achieved - a pump to green conversion efficiency of 24%
Keywords :
birefringence; diamond; surface emitting lasers; 5.2 W; Brewster surfaces; birefringence effect; birefringent filter; intracavity diamond heat spreader; lasing performance; vertical external cavity surface emitting laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20072787
