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

Edge filter enhanced self-mixing interferometry

Not Accessible

Your library or personal account may give you access

Abstract

Self-mixing interferometry (SMI) represents a simple, robust, and self-aligned technique for metrology applications. Still, its applicability on diffuse targets is limited to distances up to few meters. We present an enhanced approach based on the detection of the frequency-modulated (FM) self-mixing signal. The FM signal detection is achieved using an acetylene edge filter that maps laser frequency variations into intensity variations as the laser wavelength is tuned to the edge of the steep absorption profile. An experimental comparison between the enhanced and the conventional SMI approach is presented. The new approach yields to about two orders of magnitude larger signal-to-noise ratio and extends the applicability of SMI into new fields allowing longer detection ranges and lower backscattering signals.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Enhanced self-mixing interferometry based on volume Bragg gratings and laser diodes emitting at 405-nm wavelengths

Victor Contreras, Juha Toivonen, and Horacio Martinez
Opt. Lett. 42(11) 2221-2223 (2017)

Detection of single microparticles in airflows by edge-filter enhanced self-mixing interferometry

Victor Contreras, Jan Lönnqvist, and Juha Toivonen
Opt. Express 24(8) 8886-8894 (2016)

Balanced detection for self-mixing interferometry

Kun Li, Federico Cavedo, Alessandro Pesatori, Changming Zhao, and Michele Norgia
Opt. Lett. 42(2) 283-285 (2017)

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 (4)

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 (8)

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved