We propose a new device that is able to perform highly sensitive wavefront measurements based on the use of continuous position sensitive detectors and without resorting to any reconstruction process. We demonstrate experimentally its ability to measure small wavefront distortions through the characterization of pump-induced refractive index changes in laser material. In addition, it is shown using computer-generated holograms that this device can detect phase discontinuities as well as improve the quality of sharp phase variations measurements. Results are compared to reference Shack–Hartmann measurements, and dramatic enhancements are obtained.
© 2013 Optical Society of AmericaFull Article | PDF Article
Alexander Chernyshov, Uwe Sterr, Fritz Riehle, Jürgen Helmcke, and Johannes Pfund
Appl. Opt. 44(30) 6419-6425 (2005)
M. Ares, S. Royo, and J. Caum
Opt. Lett. 32(7) 769-771 (2007)
Ruediger Grunwald, Silke Huferath, Martin Bock, Uwe Neumann, and Stefan Langer
Opt. Lett. 32(11) 1533-1535 (2007)