Study on avalanche photodiode influence on heterodyne laser interferometer linearity

Journal Article · Tue Jun 28 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4952693· OSTI ID:22608647

Budzyn, Grzegorz; Podzorny, Tomasz ^[1]

---

1. Wroclaw University of Technology, Faculty of Electronics, Janiszewskiego 7, 50-370 Wroclaw, Poland Tel. [phone], Fax. [phone] (Poland)

In the paper we analyze factors reducing the possible accuracy of the heterodyne laser interferometers. The analysis is performed for the avalanche-photodiode input stages but is in main points valid also for stages with other type of photodetectors. Instrumental error originating from optical, electronic and digital signal processing factors is taken into consideration. We stress factors which are critical and those which can be neglected at certain accuracy requirements. In the work we prove that it is possible to reduce errors of the laser instrument below 1 nm point for multiaxial APD based interferometers by precise control of incident optical power and the temperature of the photodiode.

• OSTI ID: 22608647
• Journal Information: AIP Conference Proceedings, Vol. 1740, Issue 1; Conference: 12. international A.I.VE.LA. Conference on vibration measurements by laser and noncontact techniques: Advances and applications, Ancona (Italy), 29 Jun - 1 Jul 2016; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
CONTROL
INTERFEROMETERS
LASER RADIATION
PHOTODETECTORS
PROCESSING
STRESSES