\valunit{8}{mW}
(\valunit{10}{mW} corrected for the output mirror reflection) of the cw coherent blue light around \valunit{430}{nm} by frequency doubling of only \valunit{20}{mW} from a diode laser. With IR power of \valunit{90}{mW} we reach the doubling efficiency of \percent{60}. The overall conversion efficiency from the electrical power into the blue light is \percent{10}. By the way of careful analysis of the Blue Light Induced IR Absorption (BLIIRA) in the potassium niobate based external doubling cavity we obtain good agreement with the theoretical conversion efficiency.
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Received: 29 November 1996
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Lodahl, P., Sørensen, J. & Polzik, E. High efficiency second harmonic generation with a low power diode laser. Appl Phys B 64, 383–386 (1997). https://doi.org/10.1007/s003400050188
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DOI: https://doi.org/10.1007/s003400050188