Measurement of wavefront curvature using computer-generated holograms

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Nonlinear computer-generated holograms.

We propose a novel technique for arbitrary wavefront shaping in quadratic nonlinear crystals by introducing the concept of computer-generated holograms (CGHs) into the nonlinear optical regime. We demonstrate the method experimentally showing a conversion of a fundamental Gaussian beam pump light into the first three Hermite-Gaussian beams at the second harmonic in a stoichiometric lithium tant...

متن کامل

Nonuniformly sampled computer-generated holograms

Ravikanth Pappu Massachusetts Institute of Technology Media Laboratory Spatial Imaging Group 20 Ames Street Cambridge, Massachusetts 02139 E-mail: [email protected] Abstract. An novel algorithm for computing holographic fringe patterns based on nonuniform sampling is described. We show both analytically and via simulation that nonuniform sampling reduces the number of samples required to repr...

متن کامل

Form-birefringent computer-generated holograms.

Polarization-selective computer-generated holograms made with form-birefringent nanostructures were designed, fabricated, and evaluated experimentally at 1.5 microm. The fabricated element showed a large polarization contrast ratio (>250:1) and a high diffraction efficiency (>40% for a binary phase level element). The experimental evaluation was in good agreement with the design and modeling pr...

متن کامل

The generation of nondiffracting beams using inexpensive computer- generated holograms

Because laser applications are found in a wide variety of scientific and engineering disciplines, the dynamics of wavefields associated with laser beams are of special interest in the undergraduate physics curricula. One problem arises when a laser beam is to be shaped to a particular profile. For most applications, it is desirable that most of the laser energy be confined to a small spot. Many...

متن کامل

Modifications of detour phase computer-generated holograms.

The detour phase method for the design of computer-generated holograms can be modified to achieve multichannel reconstruction along various diffraction orders. It is shown how a single hologram can be used to display two patterns of different intensities along two diffraction orders. This is achieved by the release of any requirement on the phase distributions of these patterns, thus leaving th...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Optics Express

سال: 2019

ISSN: 1094-4087

DOI: 10.1364/oe.27.001563