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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 13,
  • Issue 5,
  • pp. 051402-051402
  • (2015)

High power red laser generation by second harmonic generation with GTR-KTP crystal

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Abstract

In this Letter, a gray-tracking-resistant—potassium titanyl phosphate (GTR-KTP) crystal is used for intracavity frequency doubling red laser generation for the first time. Under the 808 nm LD pump power of 180 W, as high as 12.5 W of red laser output is obtained with the optimum repetition rate of 7 kHz. Within the red laser power variation range between the maximum to 70%, a temperature tolerance is measured to be 35°C. The results prove that GTR-KTP should be a potential nonlinear crystal for red laser generation.

© 2015 Chinese Laser Press

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