Division IX: Optical and Infrared Techniques: (Techniques Optiques Et Infrarouges)

Polarimetry Techniques at Optical and Infrared Wavelengths

The techniques and components used to measure both linear and circular polarization at wavelengths from 0.3 μm to 20 μm are reviewed. Some emphasis is given to the implementation of polarimetry on the latest generation of large-aperture telescopes and some of the difficulties being encountered are addressed.

Emerging Optical CDMA Techniques and Applications

In this paper we present an in-depth review on the trends and the directions taken by the researchers worldwide in Optical Code Division Multiple Access (OCDMA) systems. We highlight those trends and features that are believed to be essential to the successful introduction of various OCDMA techniques in communication systems and data networks in near future. In particular we begin by giving a c...

Optical techniques for direct imaging of exoplanets/Techniques optiques pour l’imagerie directe des exoplanètes Shaped pupil coronagraphy

At Princeton we have been studying shaped pupil coronagraphs for high contrast imaging and planet finding. These will find applications in both ground and space imaging. In this article we summarize the design procedure for shaped pupils and review the various families of designs we have found. We describe the manufacturing processes we have used to make free standing shaped pupil masks and rev...

Infrared Optical Property Measurement Techniques : Definition and Preliminary Design

Comparison of Suture and vertical dome division techniques of bulbous nose refinement

Objective:In this study, we assess long-term effects of vertical dome division (V.D.D) and Suture techniques in patients with bulbous nose deformity and then compare the efficiency of these methods. Material and Methods: In this study 70 patients with bulbous nose deformity were divided into two equal groups of A and B in which group A with suture (transdomal and interdomal) technique and grou...