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High-power ps InGaAs diode laser MOPA system for efficient frequency doubling in periodically poled KTP

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Abstract

This paper reports on a mode-locked InGaAs master oscillator power amplifier (MOPA) system that generates at 920 nm 14-ps-long pulses with a repetition rate of 4.3 GHz and an average power of 2.7 W. Single-pass frequency doubling in a periodically poled KTP crystal provides 550 mW of blue 460-nm radiation. The power of the blue output, which corresponds to a conversion efficiency of more than 20%, was optimized by a detailed investigation of the influence of various system parameters like injection current and repetition rate on pulse power, pulse duration, and spectral shape of the infrared laser pulses.

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Correspondence to H. Fuchs.

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42.65.Ky; 42.55.Px; 42.72.Bj

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Fuchs, H., Tremont, M., Casel, O. et al. High-power ps InGaAs diode laser MOPA system for efficient frequency doubling in periodically poled KTP. Appl. Phys. B 87, 425–430 (2007). https://doi.org/10.1007/s00340-007-2586-x

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  • DOI: https://doi.org/10.1007/s00340-007-2586-x

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