1 May 1995 Wavelength determination of semiconductor lasers: precise but inexpensive
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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.
Jan Christian Braasch, Jan Christian Braasch, Wolfgang Holzapfel, Wolfgang Holzapfel, Stephan Neuschaefer-Rube, 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 . Submission:

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