Abstract
It is well known that one of the features of a laser diode is its wavelength tunability which can be modulated with a variable injection current and/or temperature of its active region. For many industrial and scientific applications it is desirable that the laser gets stabilized. In this paper, on the contrary, the laser diode is turned on-off for a short period of time. The generated peak variations of voltage and temperature will cause a modulation of its wavelength. This modulation is used to add phase-shifts in an unbalanced Twyman-Green interferometer and by using Carré algorithm the phase of the resulting interference wave will be retrieved.
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Acknowledgement
U. Rivera-Ortega appreciates the postdoctoral scholarship from Consejo Nacional de Ciencia y TecnologĂa (MĂ©xico) under grant 230729.
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Rivera-Ortega, U., Dirckx, J. (2017). Phase-Shifting Generated by Wavelength Modulation by Means of Switching On-Off a Laser Diode. In: MartĂnez-GarcĂa, A., Furlong, C., Barrientos, B., Pryputniewicz, R. (eds) Emerging Challenges for Experimental Mechanics in Energy and Environmental Applications, Proceedings of the 5th International Symposium on Experimental Mechanics and 9th Symposium on Optics in Industry (ISEM-SOI), 2015. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-28513-9_16
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DOI: https://doi.org/10.1007/978-3-319-28513-9_16
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