Novel method for the assessment of thermal properties of high power thyristor structure using photoacosutic technique with composite excitation signal

Author

Duer, R. ; Suszynski, Z.

Author_Institution

Oticon Polska Production Sp.z.o.o., Szczecin, Poland

fYear

2010

fDate

6-8 Oct. 2010

Firstpage

1

Lastpage

5

Abstract

This paper presents a method for assessment of thermal properties of multi-layers structures using contrast analysis of temperature response registered with photoacoustic technique. It is based on the analysis of the amplitude spectrum of temperature contrasts. Photoacoustic signal is registered in time domain with disadvantageous signal-to-noise ratio. Due to that the new approach for excitation signal synthesis was proposed. Using a composite excitation signal generated in proposed way it is possible to considerably higher signal-to-noise ratio.

Keywords

photoacoustic spectroscopy; thermal properties; thyristors; amplitude spectrum; composite excitation signal; contrast analysis; excitation signal synthesis; high power thyristor structure; multilayers structures; photoacosutic technique; photoacoustic signal; photoacoustic technique; signal-to-noise ratio; temperature contrasts; temperature response; thermal properties; time domain; Driver circuits; Frequency measurement; Impedance; Measurement by laser beam; Temperature; Temperature measurement; Thermal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermal Investigations of ICs and Systems (THERMINIC), 2010 16th International Workshop on

Conference_Location

Barcelona

Print_ISBN

978-1-4244-8453-9

Type

conf

Filename

5636288