Work

Multi-Wavelength Interferometry for Length Measurements Using Diode Lasers

Year: 2009

Type: article

Abstract: This paper describes the principle of precise length measurements using multi-wavelength interferometry. Three different examples are given in order to demonstrate PTB’s ability in this field: 1) Measurements of absolute distances up to 10 m performed by combination of the variable wavelength interferometry with fixed wavelength interferometry using two wavelengths simultaneously, 2) a three-wavelength diode laser interferometer for precision measurements of surface profiles (< 100 µm) and 3) PTB’s Precision Interferometer for length measurements of prismatic bodies, e.g. gauge blocks, using three wavelengths. The setup and principle of measurements and some results are presented and discussed in each case.

Source: Measurement Science Review

DOI: 10.2478/v10048-009-0001-y

Authors: K. Meiners-Hagen, R. Schödel, F. Pollinger, A. Abou-Zeid

Institution: Physikalisch-Technische Bundesanstalt

Language: English

Topic: Advanced Measurement and Metrology Techniques

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $37

Funder: Deutsche Forschungsgemeinschaft