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Proceedings Paper

Stabilization of two frequency combs with a small relative fceo jitter using diode laser injection locking
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Paper Abstract

We report a novel stabilization method for two frequency combs with a small relative fceo jitter using a selected single optical mode out of a frequency comb. This proposed method is intended to stabilize optical frequencies which generated by two different optical combs with immunity to environmental disturbance, frequency drift and fluctuation with time so as to enhance the measuring performance of dual comb based spectroscopy and distance measurement. A single comb mode is selected out using a composite optical filtering and diode laser injection locking. The selected optical frequency yields a narrow relative linewidth less than 1 Hz and the frequency stability of 1.58×10-17 at 10 s averaging time. By using this, we generated heterodyned beat signal between generated optical frequency and another comb to stabilize relative fceo using phase lock-in control which adjust driving frequency of acousto-optic modulator. As a result of feedback control, the relative jitter is well stabilized down to 1.06×10-15 at 10 s averaging time. This highly stable frequency instability of two combs can perform to enhance the measuring resolution, accuracy and repeatability for dual comb based spectroscopy and distance metrology.

Paper Details

Date Published: 16 March 2016
PDF: 6 pages
Proc. SPIE 9754, Photonic Instrumentation Engineering III, 97540O (16 March 2016); doi: 10.1117/12.2212838
Show Author Affiliations
Byung Jae Chun, KAIST (Korea, Republic of)
Nanyang Technological Univ. (Singapore)
Young-Jin Kim, Nanyang Technological Univ. (Singapore)
Seung-Woo Kim, KAIST (Korea, Republic of)

Published in SPIE Proceedings Vol. 9754:
Photonic Instrumentation Engineering III
Yakov G. Soskind; Craig Olson, Editor(s)

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