We present a new method based on multi-wave shearing interferometry to measure the relative phase between two independent beams separated by a physical gap. Experimental results show accuracy and sensitivity better than 50nm.
© 2006 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.5080) Diffraction and gratings : Phase shift
(320.0320) Ultrafast optics : Ultrafast optics
(320.5520) Ultrafast optics : Pulse compression
S. Mousset, C. Rouyer, G. Marre, N. Blanchot, S. Montant, and B. Wattellier, "Direct Measurement of Tiled Beam Phase Difference by Multi-Wave Lateral Shearing Interferometry," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper JWD5.
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