Entity

Time filter

Source Type


Owsik J.,Military University of Technology | Avdeev Y.,RAS A.N. Severtsov Institute of Ecology and Evolution | Liberman A.A.,All Russia Research Institute of Optical and Physical Measurements VNIIOFI | Kovalev A.A.,All Russia Research Institute of Optical and Physical Measurements VNIIOFI | And 5 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2013

This work presents an effectively implemented calibrated polarization-independent Fresnel attenuator of laser radiation power built on the basis of two Dove prisms. A method of the attenuator's alignment with a laser beam axis as well as of determining the main axes of laser radiation polarization is herein demonstrated. It is shown and experimentally proved that using model calculations the prisms' manufacturing and assembly imperfections can be compensated by the attenuator's rotation by certain angles and a corresponding change of the system's total reflection coefficient. © 2013 Copyright SPIE. Source


Owsik J.,Military University of Technology | Liberman A.A.,All Russia Research Institute of Optical and Physical Measurements VNIIOFI | Kovalev A.A.,All Russia Research Institute of Optical and Physical Measurements VNIIOFI | Mikryukov A.S.,All Russia Research Institute of Optical and Physical Measurements VNIIOFI | And 5 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

This work examines an attenuator of laser radiation based on four Dove prisms, which is much more efficient in comparison with two cascades of a di-prismatic attenuator. In this case, not only is its alignment and assembly significantly simplified, but also the consistency of the construction becomes evident. It turns out that the most optimal configuration of a four-prismatic attenuator is a pair-parallel one. This configuration, compared with a pair-perpendicular one, provides exchangeability of the di- and the four-prismatic model of the attenuator, maintains the direction of propagation of the radiation, and has a reference beam to control an attenuation coefficient in the operation process of the attenuator. © 2014 SPIE. Source

Discover hidden collaborations