Astronomical optical frequency comb generation and test in a fiber-fed MUSE spectrograph

J. M. Chavez Boggio; T. Fremberg; B. Moralejo; M. Rutowska; E. Hernandez; M. Zajnulina; A. Kelz; D. Bodenmüller; C. Sandin; M. Wysmolek; H. Sayinc; J. Neumann; R. Haynes; M. M. Roth

doi:10.1117/12.2056684

28 July 2014 Astronomical optical frequency comb generation and test in a fiber-fed MUSE spectrograph

J. M. Chavez Boggio, T. Fremberg, B. Moralejo, M. Rutowska, E. Hernandez, M. Zajnulina, A. Kelz, D. Bodenmüller, C. Sandin, M. Wysmolek, H. Sayinc, J. Neumann, R. Haynes, M. M. Roth

Author Affiliations +

Proceedings Volume 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation; 915120 (2014) https://doi.org/10.1117/12.2056684
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

We here report on recent progress on astronomical optical frequency comb generation at innoFSPEC-Potsdam and present preliminary test results using the fiber-fed Multi Unit Spectroscopic Explorer (MUSE) spectrograph. The frequency comb is generated by propagating two free-running lasers at 1554.3 and 1558.9 nm through two dispersionoptimized nonlinear fibers. The generated comb is centered at 1590 nm and comprises more than one hundred lines with an optical-signal-to-noise ratio larger than 30 dB. A nonlinear crystal is used to frequency double the whole comb spectrum, which is efficiently converted into the 800 nm spectral band. We evaluate first the wavelength stability using an optical spectrum analyzer with 0.02 nm resolution and wavelength grid of 0.01 nm. After confirming the stability within 0.01 nm, we compare the spectra of the astro-comb and the Ne and Hg calibration lamps: the astro-comb exhibits a much larger number of lines than lamp calibration sources. A series of preliminary tests using a fiber-fed MUSE spectrograph are subsequently carried out with the main goal of assessing the equidistancy of the comb lines. Using a P3d data reduction software we determine the centroid and the width of each comb line (for each of the 400 fibers feeding the spectrograph): equidistancy is confirmed with an absolute accuracy of 0.4 pm.

Citation Download Citation

J. M. Chavez Boggio, T. Fremberg, B. Moralejo, M. Rutowska, E. Hernandez, M. Zajnulina, A. Kelz, D. Bodenmüller, C. Sandin, M. Wysmolek, H. Sayinc, J. Neumann, R. Haynes, and M. M. Roth "Astronomical optical frequency comb generation and test in a fiber-fed MUSE spectrograph", Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915120 (28 July 2014); https://doi.org/10.1117/12.2056684

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available