Optimisation of a single stage VIPA spectrometers (Conference Presentation)

ChengZe Song; Emilio Sánchez-Ortiga; Matthew R. Foreman; Peter Török

doi:10.1117/12.2255054

24 April 2017 Optimisation of a single stage VIPA spectrometers (Conference Presentation)

ChengZe Song, Emilio Sánchez-Ortiga, Matthew R. Foreman, Peter Török

Proceedings Volume 10067, Optical Elastography and Tissue Biomechanics IV; 100670N (2017) https://doi.org/10.1117/12.2255054
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

VIPA (Virtually Imaged Phased Array) based spectrometers are now routinely favoured over other types of spectrometers (such as scanning Fabry-Perot) for Brillouin imaging because VIPAs permit higher data acquisition speeds as compared to others. However, higher speeds mean lower photon counts at the camera used to acquire the spectra. The quality of optical components used is also important and have profound effect on the quality of the spectrum. Yet, these issues have not been addressed by various groups doing Brillouin imaging around the world. In this talk we examine the effect of the various optical components on the overall performance of the spectrometer both in one and two stage configuration. We define information content in the measured spectra and using information theoretic approach determine system parameters under various design conditions. We show for example, the spherical aberration imparted by the plano-convex cylinder lens usually placed at the entrance of the spectrometer reduces signal quality but it otherwise does not affect the accuracy of measurements. On the other hand, aberrations introduced by lenses further down the optical train may result in significant loss in localisation accuracy of the spectra. Our approach will aid users of VIPA based spectrometers designing better quality systems.

Conference Presentation

Citation Download Citation

ChengZe Song, Emilio Sánchez-Ortiga, Matthew R. Foreman, and Peter Török "Optimisation of a single stage VIPA spectrometers (Conference Presentation)", Proc. SPIE 10067, Optical Elastography and Tissue Biomechanics IV, 100670N (24 April 2017); https://doi.org/10.1117/12.2255054

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