Analysis and optimization of high-efficiency hybridized parametric amplification

Amir Amhaz; Adam Zortea; Noah Flemens; Jeffrey Moses

doi:10.1117/12.3004845

13 March 2024 Analysis and optimization of high-efficiency hybridized parametric amplification

Amir Amhaz, Adam Zortea, Noah Flemens, Jeffrey Moses

Proceedings Volume PC12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII; PC128690Q (2024) https://doi.org/10.1117/12.3004845
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Recently, Hybridized Parametric Amplification (HPA) was experimentally demonstrated as a solution for high-efficiency optical parametric amplification, with 44% pump-to-signal energy conversion achieved in a high-gain mid-infrared sub-picosecond amplifier [Flemens, et al., arXiv:2207.04147 [physics.optics] (2022)]. In HPA, concurrent idler Second Harmonic Generation (SHG) eliminates the idler during amplification [Flemens, et al., Opt. Express 29, 30590-30609 (2021)]. This produces a saturating amplifier gain, which enables highly uniform spatiotemporal conversion and thus high-efficiency high-gain amplification for bell-shaped pump beams. In this work, we analyze major practical considerations for designing and implementing an HPA system. Considerations investigated include phase-matching bandwidth, limitations due to self-phase modulation and cascaded chi(2) nonlinearity, the effect of gain guiding to overcome temporal and spatial walk-off, noise performance, and factors affecting beam quality and M-squared measurements. We find HPA to be a robust and feasible method for achieving high-efficiency parametric amplification.

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Amir Amhaz, Adam Zortea, Noah Flemens, and Jeffrey Moses "Analysis and optimization of high-efficiency hybridized parametric amplification", Proc. SPIE PC12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, PC128690Q (13 March 2024); https://doi.org/10.1117/12.3004845

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KEYWORDS

Second harmonic generation

Complex systems

Mid-IR

Modulation

Nonlinear crystals

Phase shift keying

Pulse signals

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