Publication

Photorefractive recording in LiNbO3 : Mn

Related publications (32)

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Digital holographic microscopy investigation of second harmonic generated at a glass/air interface

Christian Depeursinge, Nicolas Pavillon, Jonas Kühn, Etienne Shaffer

Optical second harmonic generation, thanks to its coherent nature, is a suitable signal for interferometric measurements, such as digital holography: a well-established imaging technique that allows recovering complex diffraction wavefields from which it i ...

2009

Towards Large Scale CMOS Single-Photon Detector Arrays for Lab-on-Chip Applications

Edoardo Charbon

Single-photon detection is useful in many domains requiring time-resolved imaging, high sensitivity and high dynamic range. In this paper the miniaturization and performance potential of solid-state single-photon detectors are discussed in the context of l ...

2008

Precision imaging for biosensing (INVITED)

Edoardo Charbon

Precision imaging is a collection of image sensing techniques involving ultra-high sensitivity, time accuracy, and dynamic range, as well as ultra-low noise. In fact, imaging biological processes often requires sub-milli-lux sensitivity to detect tiny leve ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2007

Numerical aberrations compensation and polarization imaging in digital holographic microscopy

Tristan Colomb

In this thesis, we describe a method for the numerical reconstruction of the complete wavefront properties from a single digital hologram: the amplitude, the phase and the polarization state. For this purpose, we present the principle of digital holographi ...

EPFL2006

Tone mapping for high dynamic range images

Laurence Meylan

Tone mapping is an essential step for the reproduction of "nice looking" images. It provides the mapping between the luminances of the original scene to the output device's display values. When the dynamic range of the captured scene is smaller or larger t ...

EPFL2006

Photorefractive properties of lithium niobate crystals doped with manganese

Demetri Psaltis

The photorefractive properties of lithium niobate crystals doped with manganese (Mn) have been investigated. It is found that the effect of dark decay due to electron tunneling, which is the limiting factor of the highest practical doping level, is less in ...

2003

The role of Mn in photorefractive LiNbO3

Demetri Psaltis

The dynamic range, sensitivity and dark decay of holographic recording in LiNbO3 crystals doped with 0.2 atomic% Mn with different oxidation states have been measured. The sensitivity is 0.5 cm/J and found to be independent of the oxidation states, while t ...

Optical Soc America, 2010 Massachusetts Ave Nw, Washington, Dc 20036 Usa2001

An adaptive structure for sigma delta modulation with improved dynamic range

Ali H. Sayed

This work proposes a novel structure for adaptive sigma delta modulation that leads to considerable improvement in the dynamic range of the modulator. The quantizer step-size is adapted based on estimates of the input signal to the quantizer block rather t ...

2000

La diffusion Brillouin dans les fibres optiques

Among all non-linear optical effects observed in single-mode optical fibres, stimulated Brillouin scattering (SBS) is of particular importance since it has numerous practical implications. SBS occurs when laser waves are scattered through the interaction o ...

EPFL1997

High resolution optical low coherence reflectometry in biological tissues

Optical low coherence reflectometry (OLCR) is a technique that permits to measure the absolute position and to determine optical properties. It is based on an interferometric method that uses a probe light characterized by a broad spectrum. Small volumes l ...

EPFL1994