Wide-span optical frequency comb generator for accurate optical frequency difference measurement. Kourogi, M., Nakagawa, K., & Ohtsu, M. IEEE Journal of Quantum Electronics, 29(10):2693–2701, October, 1993. Conference Name: IEEE Journal of Quantum Electronics
Wide-span optical frequency comb generator for accurate optical frequency difference measurement [link]Paper  doi  abstract   bibtex   
An optical frequency comb (OFC) generator was realized for accurate optical frequency difference measurement of 1.5 mu m wavelength semiconductor lasers by using a high frequency LiNbO/sub 3/ electrooptic phase modulator which was installed in a Fabry-Perot cavity. It was confirmed that the span of the OFC was wider than 4 THz. By using semiconductor lasers whose spectrum linewidths were narrowed to 1 kHz and a sensitive optical balanced-mixer-receiver for measuring beat signal between the sideband of the comb and the laser, we demonstrated a frequency difference measurement up to 0.5 THz with a signal-to-noise ratio higher than 61 dB, and a heterodyne optical phase locking with a heterodyne frequency of 0.5 THz in which the residual phase error variance was less than 0.01 rad/sup 2/. The maximum measurable frequency difference, which was defined as the sideband frequency with the signal-to-noise ratio of 0 dB, was estimated to be 4 THz.\textless\textgreater
@article{kourogi_wide-span_1993,
	title = {Wide-span optical frequency comb generator for accurate optical frequency difference measurement},
	volume = {29},
	issn = {1558-1713},
	url = {https://ieeexplore.ieee.org/abstract/document/250392},
	doi = {10.1109/3.250392},
	abstract = {An optical frequency comb (OFC) generator was realized for accurate optical frequency difference measurement of 1.5 mu m wavelength semiconductor lasers by using a high frequency LiNbO/sub 3/ electrooptic phase modulator which was installed in a Fabry-Perot cavity. It was confirmed that the span of the OFC was wider than 4 THz. By using semiconductor lasers whose spectrum linewidths were narrowed to 1 kHz and a sensitive optical balanced-mixer-receiver for measuring beat signal between the sideband of the comb and the laser, we demonstrated a frequency difference measurement up to 0.5 THz with a signal-to-noise ratio higher than 61 dB, and a heterodyne optical phase locking with a heterodyne frequency of 0.5 THz in which the residual phase error variance was less than 0.01 rad/sup 2/. The maximum measurable frequency difference, which was defined as the sideband frequency with the signal-to-noise ratio of 0 dB, was estimated to be 4 THz.{\textless}{\textgreater}},
	number = {10},
	urldate = {2023-11-22},
	journal = {IEEE Journal of Quantum Electronics},
	author = {Kourogi, M. and Nakagawa, K. and Ohtsu, M.},
	month = oct,
	year = {1993},
	note = {Conference Name: IEEE Journal of Quantum Electronics},
	pages = {2693--2701},
}

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