Response Function of Homodyne Wavelength Difference Stabilization

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Response_Function_of_Homodyne_Wavelength_Difference_Stabilization.pdf (1.18 MB)

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https://ieeexplore.ieee.org/document/9850495/

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https://doi.org/10.1109/EFTF/IFCS54560.2022.9850495
 http://hdl.handle.net/11603/31786

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UMBC Computer Science and Electrical Engineering Department
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0003-0269-8433

Date

2022-08-15

Type of Work

conference papers and proceedings
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Citation of Original Publication

J. P. Cahill, T. Mahmood, P. G. Sykes, W. Zhou and C. R. Menyuk, "Response Function of Homodyne Wavelength Difference Stabilization," 2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS), Paris, France, 2022, pp. 1-2, doi: 10.1109/EFTF/IFCS54560.2022.9850495.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

We measured the response function at wavelengths of 1540 nm and 1560 nm of an 8-m homodyne interferometer to modulations of the repetition rate and carrier-envelope offset frequency (f꜀ₑₒ ) of an optical frequency comb (OFC). It is known that subtracting the response at one wavelength from the other generates an error signal free of f꜀ₑₒ noise, forming a wavelength difference stabilization (WDS) interferometer that may stabilize non-octave-spanning OFCs. We calculate the WDS response function from our data, and find that while the sensitivity is expected to match a heterodyne system, changes in the response function of a homodyne WDS interferometer due to large-scale drifts of f꜀ₑₒ pose a challenge to robustly stabilize an OFC.