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Carrier-envelope offset stable, coherently combined ytterbium-doped fiber CPA delivering 1 kW of average power

Shestaev E, Haedrich S, Walther N, Eidam T, Klenke A, Seres , Bengery Z, Jojart P, Varallyay Z, Borzsonyi A, Limpert J (2020)

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Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 45

Pages Range: 6350-6353

Journal Issue: 23

DOI: 10.1364/OL.409410

Abstract

We present a carrier-envelope offset (CEO) stable ytterbium-doped fiber chirped-pulse amplification system employing the technology of coherent beam combining and delivering more than 1 kW of average power at a pulse repetition rate of 80 MHz. The CEO stability of the system is 220 mrad rms, characterized out-of-loop with an f -to-2f interferometer in a frequency offset range of 10 Hz to 20 MHz. The high-power amplification system boosts the average power of the CEO stable oscillator by five orders of magnitude while increasing the phase noise by only 100 mrad. No evidence of CEO noise deterioration due to coherent beam combining is found. Low-frequency CEO fluctuations at the chirped-pulse amplifier are suppressed by a “slow loop” feedback. To the best of our knowledge, this is the first demonstration of a coherently combined laser system delivering an outstanding average power and high CEO stability at the same time.

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How to cite

APA:

Shestaev, E., Haedrich, S., Walther, N., Eidam, T., Klenke, A., Seres, .,... Limpert, J. (2020). Carrier-envelope offset stable, coherently combined ytterbium-doped fiber CPA delivering 1 kW of average power. Chinese Optics Letters, 45(23), 6350-6353. https://dx.doi.org/10.1364/OL.409410

MLA:

Shestaev, Evgeny, et al. "Carrier-envelope offset stable, coherently combined ytterbium-doped fiber CPA delivering 1 kW of average power." Chinese Optics Letters 45.23 (2020): 6350-6353.

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