Polarization interferometer using Liquid Crystalline Polymer waveplate for wavelength measurement
AbstractTwo-beam polarization interferometer for measurement of the change of the wavelength of a tunable semiconductor laser was designed built and tested. This interferometer uses a λ/8 waveplate made from Liquid Crystalline Polymer in order to generate two output signals in quadrature. The λ/8 waveplate can be manufactured either on a beamsplitter face or on the mirror surface, reducing the cost and complexity of the optomechnical assembly. Experiment results show that resolution of 2pm was attained for the wavelength range 628-635nm. The range of operation of such interferometer can be extended if wavelength-dependent Heydemann correction is used.
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How to Cite
P. Wierzba and A. Mazikowski, “Polarization interferometer using Liquid Crystalline Polymer waveplate for wavelength measurement”, Photonics Lett. Pol., vol. 7, no. 4, pp. pp. 100–102, Dec. 2015.