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Fully stabilized optical frequency comb with sub-radian CEO phase noise from a SESAM-modelocked 1.5 um solid-state laser
Résumé Abstract: We report the first full stabilization of an optical frequency comb generated from a femtosecond diode-pumped solid-state laser (DPSSL) operating in the 1.5 um spectral region. The stability of the comb is characterized in free-running and in phase-locked operation by measuring the noise properties of the carrier-envelope offset (CEO) beat, of the repetition rate, and of a comb line at 1558 nm. The high Q-factor of the semiconductor saturable absorber mirror (SESAM)-modelocked 1.5 um DPSSL results in a low-noise CEO-beat, for which a tight phase lock can be much more easily realized than for a fiber comb. Using a moderate feedback bandwidth of only 5.5 kHz, we achieved a residual integrated phase noise of 0.72 rad rms for the locked CEO, which is one of the smallest values reported for a frequency comb system operating in this spectral region. The fractional frequency stability of the CEO-beat is 20-fold better than measured in a standard self-referenced commercial fiber comb system and contributes only 10E-15 to the optical carrier frequency instability at 1 s averaging time.
   
Mots-clés OCIS codes: (140.4050) Mode-locked lasers; (140.3580) Lasers, solid-state; (120.3930)
Metrological instrumentation; (320.7090) Ultrafast lasers.
   
Citation Schilt, S., Bucalovic, N., Dolgovskiy, V., Schori, C., Stumpf, M., Di Domenico, G., Pekarek , S., Oehler, A., Südmeyer, T., Keller, U., & Thomann, P. (2011). Fully stabilized optical frequency comb with sub-radian CEO phase noise from a SESAM-modelocked 1.5 um solid-state laser. Optics Express, 19(24), 24171-24181.
   
Type Article de périodique (Anglais)
Date de publication 11-11-2011
Nom du périodique Optics Express
Volume 19
Numéro 24
Pages 24171-24181
URL http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-19-2...
Liée au projet MIXSEL (Modelocked Integrated eXternal-cavity Surface Emi...