A near-infrared frequency comb for Y+J band astronomical spectroscopy
Abstract
Radial velocity (RV) surveys supported by high precision wavelength references (notably ThAr lamps and I2 cells) have successfully identified hundreds of exoplanets; however, as the search for exoplanets moves to cooler, lower mass stars, the optimum wave band for observation for these objects moves into the near infrared (NIR) and new wavelength standards are required. To address this need we are following up our successful deployment of an H band(1.45-1.7μm) laser frequency comb based wavelength reference with a comb working in the Y and J bands (0.98-1.3μm). This comb will be optimized for use with a 50,000 resolution NIR spectrograph such as the Penn State Habitable Zone Planet Finder. We present design and performance details of the current Y+J band comb.
- Publication:
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Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
- Pub Date:
- September 2012
- DOI:
- 10.1117/12.926868
- arXiv:
- arXiv:1209.3295
- Bibcode:
- 2012SPIE.8450E..1IO
- Keywords:
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- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- Submitted to SPIE, conference proceedings 8450