Dr. Yulia Y. Choporova Profile

Dr. Yulia Y. Choporova

at Budker Institute of Nuclear Physics SB RAS

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 26 November 2023 Paper

Combined high-power terahertz vortex Bessel beams: formation and identification

N. Osintseva, V. Gerasimov, Yu. Choporova, V. Kukotenko, V. Pavelyev, B. Knyazev

Proceedings Volume 12776, 127760J (2023) https://doi.org/10.1117/12.2687532

KEYWORDS: Bessel beams, Terahertz radiation, Optical filters, Axicons, Multiplexing, Free electron lasers, Wavefronts, Spiral phase plates

Read Abstract +

The push to improve data capacity in wireless networks has led to an increase in carrier frequency in the terahertz band. This has enabled the use of direct beams transmission due to the shorter wavelength. One method of further densification of transmitted communication channels is through the use of vortex Bessel beams, which allow for signal combination in a single channel. In addition, these beams offer improved beam stability through their unique features of non-diffraction and self-healing, which is particularly important in wireless transmission where atmospheric turbulence is a factor. Vortex Bessel beams are characterized by a topological charge, l, which cannot be determined from their intensity profile alone. Therefore, spatial filtering is necessary at the receiver stage to identify the desired mode carried by a distorted or combined beam. A diffractive optical element with a specially designed complex transmission can serve as a filter matched to the desired mode. This study presents the experimental results of Bessel mode identification using beams formed by binary spiral binary phase axicons that transform the Gaussian mode of high-power terahertz radiation from the Novosibirsk Free Electron Laser. The specified mode is passed through a filter (similar spiral binary axicon with |l| = 1, 2, 3, or 4, and a lens) and then detected by a pyroelectric camera in the lens focal plane. A positive response, indicated by a narrow peak, confirms the compatibility of the specified and filtering modes. Experiments were conducted on single-mode and combined beams (l = -1 and -2), and mode identification was also demonstrated for beams passed through an inhomogeneous medium.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years