Simple and versatile heterodyne whole-field interferometer for phase optics characterization
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American Institute of Physics (AIP)
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A wavefront sensor for thermally induced lens and passive lens characterization based on low-coherence digital speckle interferometry was developed and studied. By illuminating the optical setup with two slightly detuned red diode lasers, whole-field contour interference fringes were generated according to the resulting synthetic wavelength. For fringe pattern visualization the optical setup used the light transmitted through a ground glass plate as object beam. The performance of the sensor was investigated and its versatility was demonstrated by measuring the thermal lens induced in an Er-doped glass sample pumped by a 1.76-W diode laser emitting at 976 nm and by evaluating the wavefront distortion introduced by an ophthalmic progressive lens. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757396]
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Review of Scientific Instruments. Melville: Amer Inst Physics, v. 83, n. 10, p. 7, 2012.
