Research on eliminating high-order spectrum in broadband miniature spectrometer system

Kang Liu; Feihong Yu

doi:10.1117/12.975647

15 October 2012 Research on eliminating high-order spectrum in broadband miniature spectrometer system

Kang Liu, Feihong Yu

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 841506 (2012) https://doi.org/10.1117/12.975647
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

A dispersion spectrum order distribution model is established in order to eliminate the overlapping of broadband spectrum range among various dispersion orders in grating devices and the micro-array detector based miniature spectrometer system. Both step filters and the numeric filter are, respectively, designed to eliminate the high-order spectrum in such system. For the step-filter method, a novel filter design is introduced. The evaluation function of the design parameters is defined. Two kinds of step-filter are designed and manufactured by lithography and thin film coating. For the numeric-filter method, a calculation method of deducing the high-order spectra data is illustrated. The accuracy of this method depends on the measurement of diffraction efficiency ratio. A new measurement method based on Deuterium-Halogen light source and short-pass filter is accomplished. Both Mercury-Argon lamp and Tungsten Halogen lamp are used to verify the effect of these two methods. And the results show that both methods have notable effects in eliminating high-order spectra of broadband miniature spectrometer systems. The step-filter method is a physical method and has an advantage of real-time input and output. The numeric filter is a calculation method that does not reduce the intensity of the spectrum. Currently, the numeric filter method can be seen to have certain advantages compared with step-filter method used in broadband miniature spectrometer systems with wavelength range of visible to near-infrared.

Citation Download Citation

Kang Liu and Feihong Yu "Research on eliminating high-order spectrum in broadband miniature spectrometer system", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 841506 (15 October 2012); https://doi.org/10.1117/12.975647

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