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Agafonov A.N.,Samara State Aerospace University | Choporova Y.Y.,Samara State Aerospace University | Kaveev A.K.,Samara State Aerospace University | Knyazev B.A.,Samara State Aerospace University | And 4 more authors.
Applied Optics | Year: 2015

This paper presents experimental results on the formation of given laser modes from an illuminating Gaussian beam of the terahertz Novosibirsk free electron laser at a wavelength of 141 μm. Binary silicon diffractive optical elements were applied. The experimental results obtained are in good agreement with the results of computer simulation. © 2015 Optical Society of America.


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Tydex Llc and J.S. Co. | Date: 2009-12-22

Optical goods, namely, detectors, namely, optical-acoustic detector, Golay cells for laboratory use; optical lenses, microscope condensers, magnifying glasses, optical lenses for astrophotography; eyepieces for telescopes; scientific and technical apparatus, namely, optical mirrors; optical lenses, optical glass to produce lenses, optical crystal to produce lenses, planar optical elements, namely, optical windows for laboratory use; optical filters, optical reflectors, mirrors for lasers, prisms for scientific purposes, optical polarizers; optical beam splitters; optics for lasers; optical waveplates. Glass un-worked and semi-worked, namely, fused silica, glass, quartz. Packaging goods for transportation. Applying protective coatings to windows, lenses, mirrors, prisms, and optics; electro and metal coating, namely, gilding and gold-plating; glass tinting, silver-plating, custom grinding and polishing of optical glass elements for others.


Kaveev A.K.,TYDEX LLC | Kropotov G.I.,TYDEX LLC | Tsypishka D.I.,TYDEX LLC | Tzibizov I.A.,TYDEX LLC | And 2 more authors.
Applied Optics | Year: 2014

We present the results of calculation and experimental testing of the tunable wavelength terahertz polarization converter represented by a set of plane-parallel birefringent plates with an in-plane birefringence axis. An experimental device has been produced and tested. The calculations show that the effect of interference between the interfaces, including air gaps, may be neglected. The considered device may be used as a simple narrow achromatic waveplate, or a Solc band pass filter for the specified wavelength. © 2014 Optical Society of America.


Kaveev A.K.,TYDEX LLC | Kropotov G.I.,TYDEX LLC | Tsypishka D.I.,TYDEX LLC | Tzibizov I.A.,TYDEX LLC | And 2 more authors.
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz | Year: 2014

We present the results of calculation and experimental testing of the tunable wavelength terahertz polarization converter (TWPC) represented by set of planeparallel birefringent plates with in-plane birefringence axis. An experimental device has been produced and tested. The calculations show that the effect of interference between the interfaces, including air gaps, may be neglected. Considered device may be used as the simple narrow achromatic waveplate, or Solc band pass filter for the specified wavelength. © 2014 IEEE.


Agafonov A.N.,Samara State Aerospace University | Volodkin B.O.,Samara State Aerospace University | Kachalov D.G.,Samara State Aerospace University | Knyazev B.A.,Novosibirsk State University | And 6 more authors.
Journal of Modern Optics | Year: 2016

We demonstrate results of studies of a silicon binary diffractive optical element (DOE) focusing a terahertz laser Gaussian beam into a paraxial segment. The characteristics of the DOE were examined on a Novosibirsk Free Electron Laser beam of 141-m wavelength. © 2015 Taylor & Francis.

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