Design and development of a cryogenic high-accuracy refractometer

Paolo Spanò; Andrea Bianco; Giorgio Toso; Marco Canetti; Alessandro Battocchio

doi:10.1117/12.789279

23 July 2008 Design and development of a cryogenic high-accuracy refractometer

Paolo Spanò, Andrea Bianco, Giorgio Toso, Marco Canetti, Alessandro Battocchio

Proceedings Volume 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation; 70184K (2008) https://doi.org/10.1117/12.789279
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

We present the development of a demonstration prototype for a compact and relatively cheap system capable to measure the refraction index of glasses, between 0.4 to 1.7 micron, at room and cryogenic temperatures (T=100-300 K), with an absolute precision of few parts of 10^-5. The basic concept is the measurement of the deviation angle of monochromatic light passing through a prism sample placed in the cryogenic chamber. The precision of the measurements depends on many factors, in particular the angle measurement and the thermal stability, therefore the system can control its alignment. The main issue is the trade-off between the simplicity of the set-up and the precision of the refractive index measurement.

Citation Download Citation

Paolo Spanò, Andrea Bianco, Giorgio Toso, Marco Canetti, and Alessandro Battocchio "Design and development of a cryogenic high-accuracy refractometer", Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70184K (23 July 2008); https://doi.org/10.1117/12.789279

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