Title :
Precise determination of the refractive index of air in Fabry-Perot cavity by means of the optical frequency comb
Author :
Smid, Radek ; Cip, Ondrej ; Mikel, Bretislav ; Buchta, Zdenek ; Cizek, Martin ; Lazar, Josef
Author_Institution :
Inst. of Sci. Instrum., Brno, Czech Republic
Abstract :
We experimentally demonstrated a method for monitoring of cavity length changes based on femtosecond laser comb. Our pilot experiment based on separation of frequency comb lines by fiber Bragg grating produces an unlimited variety of Fabry-Perot cavity lengths to be locked on. We experimentally demonstrated that the Fabry-Perot cavity length could be locked to one chosen femtosecond frequency comb line. Tracking the optical path distance of FPC to optical component of frequency comb can be directly measured by means of counter of repetition frequency.
Keywords :
Bragg gratings; Fabry-Perot resonators; air; frequency measurement; high-speed optical techniques; laser cavity resonators; laser mode locking; laser variables measurement; optical tracking; refractive index measurement; FPC; Fabry-Perot cavity length change monitoring; air refractive index determination; femtosecond laser comb; femtosecond optical frequency comb line; fiber Bragg grating; locking; optical component; optical path distance tracking;
Conference_Titel :
EFTF-2010 24th European Frequency and Time Forum
Conference_Location :
Noordwijk
Print_ISBN :
978-1-4673-5970-2
DOI :
10.1109/EFTF.2010.6533721
