Highly efficient frequency doubling of 1700 nm ultrashort pulsed fiber laser in PPLN bulk crystal

Aleksand Koviarov; Dmitrii Stoliarov; Diana Galiakhmetova; Edik Rafailov

doi:10.1117/12.2648287

17 March 2023 Highly efficient frequency doubling of 1700 nm ultrashort pulsed fiber laser in PPLN bulk crystal

Aleksand Koviarov, Dmitrii Stoliarov, Diana Galiakhmetova, Edik Rafailov

Proceedings Volume PC12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII; PC124050S (2023) https://doi.org/10.1117/12.2648287
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We demonstrated efficient frequency doubling of the ultrafast laser system at the wavelength range of 1620 – 1700 nm. The laser system was based on Er3+ fiber laser with Raman soliton self-frequency shift (SSFS) stage. The power of SSFS radiation was up to 110 mW/10.9 MHz with a pulse duration of 125 fs. PPLN crystal with several quasi-phase matching periods was used for efficient frequency doubling in the tuning range. The highest SHG power of 55 mW was obtained at 1675 nm with conversion efficiency of > 50%. The developed laser will be used for bladder cancer diagnosis by multi-photon bioimaging.

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Citation Download Citation

Aleksand Koviarov, Dmitrii Stoliarov, Diana Galiakhmetova, and Edik Rafailov "Highly efficient frequency doubling of 1700 nm ultrashort pulsed fiber laser in PPLN bulk crystal", Proc. SPIE PC12405, Nonlinear Frequency Generation and Conversion: Materials and Devices XXII, PC124050S (17 March 2023); https://doi.org/10.1117/12.2648287

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KEYWORDS

Second-harmonic generation

Cancer

Crystals

Laser crystals

Pulsed fiber lasers

Fiber lasers

Laser systems engineering

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