Wavelength determination of semiconductor lasers: precise but inexpensive

Jan Christian Braasch; Wolfgang Holzapfel; Stephan Neuschaefer-Rube

doi:10.1117/12.201655

1 May 1995 Wavelength determination of semiconductor lasers: precise but inexpensive

Jan Christian Braasch, Wolfgang Holzapfel, Stephan Neuschaefer-Rube

Author Affiliations +

Optical Engineering, Vol. 34, Issue 5, (May 1995). https://doi.org/10.1117/12.201655

Abstract

Precise optical wavelength measurements can be performed by use of a novel wavelength sensor. This low-cost sensor consists of a wavelength-sensitive photodiode and a high-precision log ratio amplifier. The center wavelength of monochromatic or narrowband light sources such as semiconductor lasers in the visible or near-infrared wavelength range can be determined. By simultaneously testing the properties of monomode laser diodes with a standard wavemeter, the feasibility and precision of the wavelength sensor are demonstrated. Wavelength variations less than 0.1 nm are detected clearly.

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Jan Christian Braasch, Wolfgang Holzapfel, and Stephan Neuschaefer-Rube "Wavelength determination of semiconductor lasers: precise but inexpensive," Optical Engineering 34(5), (1 May 1995). https://doi.org/10.1117/12.201655

Published: 1 May 1995

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