Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Distance measurement by the wavelength shift of laser diode light

Not Accessible

Your library or personal account may give you access

Abstract

This paper proposes a method for measuring distance larger than the wavelength of light with an interferometer using a laser diode. This method uses the fact that the wavelength of the emitted light of a laser diode varies in proportion to the diode’s injection current. The phase difference between the two interfering beams varies due to the sinusoidal variation of wavelength. The variation of the phase difference is detected by the optical heterodyne method. The magnitude of the variation is proportional to the measuring distance and the light wavelength shift. If the wavelength shift is known, a distance larger than the wavelength can be obtained from measurement of the phase variation. This method is a kind of multiwavelength interferometry using a single light source. We have done some fundamental experiments with this method and have confirmed its applicability to practical applications.

© 1986 Optical Society of America

Full Article  |  PDF Article
More Like This
Absolute distance measurement by wavelength shift interferometry with a laser diode: some systematic error sources

Hisao Kikuta, Koichi Iwata, and Ryo Nagata
Appl. Opt. 26(9) 1654-1660 (1987)

Double sinusoidal phase-modulating laser diode interferometer for distance measurement

Osami Sasaki, Tadahiko Yoshida, and Takamasa Suzuki
Appl. Opt. 30(25) 3617-3621 (1991)

Absolute interferometric distance measurement using a FM-demodulation technique

Edgar Fischer, Ernst Dalhoff, Silke Heim, Ulrich Hofbauer, and Hans J. Tiziani
Appl. Opt. 34(25) 5589-5594 (1995)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved