Hand-held Raman sensor head for in-situ characterization of meat quality applying a microsystem 671 nm diode laser

Heinar Schmidt; Kay Sowoidnich; Martin Maiwald; Bernd Sumpf; Heinz-Detlef Kronfeldt

doi:10.1117/12.818163

30 April 2009 Hand-held Raman sensor head for in-situ characterization of meat quality applying a microsystem 671 nm diode laser

Heinar Schmidt, Kay Sowoidnich, Martin Maiwald, Bernd Sumpf, Heinz-Detlef Kronfeldt

Author Affiliations +

Proceedings Volume 7312, Advanced Environmental, Chemical, and Biological Sensing Technologies VI; 73120H (2009) https://doi.org/10.1117/12.818163
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

A hand-held Raman sensor head was developed for the in-situ characterization of meat quality. As light source, a microsystem based external cavity diode laser module (ECDL) emitting at 671 nm was integrated in the sensor head and attached to a miniaturized optical bench which contains lens optics for excitation and signal collection as well as a Raman filter stage for Rayleigh rejection. The signal is transported with an optical fiber to the detection unit which was in the initial phase a laboratory spectrometer with CCD detector. All elements of the ECDL are aligned on a micro optical bench with 13 x 4 mm² footprint. The wavelength stability is provided by a reflection Bragg grating and the laser has an optical power of up to 200 mW. However, for the Raman measurements of meat only 35 mW are needed to obtain Raman spectra within 1 - 5 seconds. Short measuring times are essential for the hand-held device. The laser and the sensor head are characterized in terms of stability and performance for in-situ Raman investigations. The function is demonstrated in a series of measurements with raw and packaged pork meat as samples. The suitability of the Raman sensor head for the quality control of meat and other products will be discussed.

Citation Download Citation

Heinar Schmidt, Kay Sowoidnich, Martin Maiwald, Bernd Sumpf, and Heinz-Detlef Kronfeldt "Hand-held Raman sensor head for in-situ characterization of meat quality applying a microsystem 671 nm diode laser", Proc. SPIE 7312, Advanced Environmental, Chemical, and Biological Sensing Technologies VI, 73120H (30 April 2009); https://doi.org/10.1117/12.818163

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