Abstract

We report a simple technique to suppress high-frequency phase noise of a Yb-based fiber optical frequency comb using an active intensity noise servo. Out-of-loop measurements of the phase noise using an optical heterodyne beat with a cw laser show suppression of phase noise by $\ge 7\mathrm{dB}$ out to Fourier frequencies of $100\mathrm{kHz}$ with a unity-gain crossing of $\sim 700\mathrm{kHz}$. These results are enabled by the strong correlation between the intensity and phase noise of the laser. Detailed measurements of intensity and phase noise spectra, as well as transfer functions, reveal that the dominant phase and intensity noise contribution above $\sim 100\mathrm{kHz}$ is due to amplified spontaneous emission or other quantum noise sources.

© 2011 Optical Society of America

Impact of dispersion on amplitude and frequency noise in a Yb-fiber laser comb

Lora Nugent-Glandorf, Todd A. Johnson, Yohei Kobayashi, and Scott A. Diddams
Opt. Lett. 36(9) 1578-1580 (2011)

Reduced phase noise in an erbium frequency comb via intensity noise suppression

A. D. Brandt, S. F. Cooper, Z. Burkley, and D. C. Yost
Opt. Express 25(15) 18175-18181 (2017)

Full phase stabilization of a Yb:fiber femtosecond frequency comb via high-bandwidth transducers

C. Benko, A. Ruehl, M. J. Martin, K. S. E. Eikema, M. E. Fermann, I. Hartl, and J. Ye
Opt. Lett. 37(12) 2196-2198 (2012)

Ultra-low-noise carrier-envelope phase stabilization of a Kerr-lens mode-locked Yb:CYA laser frequency comb with a feed-forward method

Ziyue Zhang, Hainian Han, Huibo Wang, Xiaodong Shao, Shaobo Fang, and Zhiyi Wei
Opt. Lett. 44(22) 5489-5492 (2019)

Characterization of a DFG comb showing quadratic scaling of the phase noise with frequency

Thomas Puppe, Alexander Sell, Russell Kliese, Nazanin Hoghooghi, Armin Zach, and Wilhelm Kaenders
Opt. Lett. 41(8) 1877-1880 (2016)