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

Reaching <100 ppm/K output intensity temperature stability with single-color light-emitting diodes

Not Accessible

Your library or personal account may give you access

Abstract

Optical sources with highly temperature-stable output intensity and low power consumption are desired in portable devices for metrology, and in medical applications, communications, and illumination. This paper introduces and demonstrates an optical stabilization scheme that uses the drift in peak-emission wavelength of light emitted from an LED as a temperature feedback signal to realize output intensity temperature coefficients below 100 ppm/K. The control principle relies on a conventional feedback loop but with a specially designed weakly polarizing optical interference coating that exhibits different transmittivity/reflectivity ratio dependence on wavelength for two different polarizations and by using a weighted sum of two polarizations as the output power correcting signal in a feedback loop. The method does not need a thermometer or temperature control stage, and its calibration can be performed electronically, adding to the simplicity of the design and making it also suitable for portable and battery-operated instruments.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Scheme for improving laser stability via feedback control of intracavity nonlinear loss

Pixian Jin, Huadong Lu, Jing Su, and Kunchi Peng
Appl. Opt. 55(13) 3478-3482 (2016)

High-output LED-based light engine for profile lighting fixtures with high color uniformity using freeform reflectors

Jesper Gadegaard, Thøger Kari Jensen, Dennis Thykjær Jørgensen, Peter Kjær Kristensen, Thomas Søndergaard, Thomas Garm Pedersen, and Kjeld Pedersen
Appl. Opt. 55(6) 1356-1365 (2016)

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 (14)

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