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

fYear

2010

fDate

13-16 April 2010

Firstpage

1

Lastpage

7

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;

fLanguage

English

Publisher

ieee

Conference_Titel

EFTF-2010 24th European Frequency and Time Forum

Conference_Location

Noordwijk

Print_ISBN

978-1-4673-5970-2

Type

conf

DOI

10.1109/EFTF.2010.6533721

Filename

6533721