Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: Jun 1, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Off-axis metallic diffractive lens for terahertz beams.

Agnieszka Siemion¹, Andrzej Siemion, Michał Makowski

¹Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00 662 Warsaw, Poland.

|June 3, 2011

Summary

A novel diffractive optical element focuses terahertz radiation off-axis. This element also acts as a spatial and spectral filter, ideal for separating terahertz signals in passive detection devices.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Tuning light-matter interaction of near-infrared nanoplasmonic scintillators.

Scientific reports·2026

Same author

3D-Printed Components for Cost-Effective Polarisation Sensing of Terahertz Radiation.

Sensors (Basel, Switzerland)·2025

Same author

Enhancement in terahertz imaging of transparent objects using phase contrast methods in a 4f optical system.

Optics express·2025

Same author

Demonstration of Directly Nanoimprinted Silica-Titania Large-Size Vertical Grating Couplers for Multichannel Photonic Sensor Development.

Materials (Basel, Switzerland)·2025

Same author

Scaling Up Purcell-Enhanced Self-Assembled Nanoplasmonic Perovskite Scintillators into the Bulk Regime.

Advanced materials (Deerfield Beach, Fla.)·2025

Same author

Unraveling the Role of Interfacial Charge Transfer on Photoactivity and Anomalous Luminescence Quenching of V<sub>4</sub>C<sub>3</sub>T<i></i>/Protonated g-C<sub>3</sub>N<sub>4</sub> Heterostructures.

ACS applied materials & interfaces·2025

Area of Science:

Optics and Photonics
Terahertz Technology

Background:

Terahertz (THz) radiation presents unique challenges for detection due to broadband thermal noise.
Efficient focusing and filtering of THz beams are crucial for sensitive applications.

Purpose of the Study:

To design and evaluate a diffractive optical element for off-axis focusing of terahertz radiation.
To demonstrate its capability as a spatial and spectral filter for signal separation.

Main Methods:

Nonparaxial design of a diffractive optical element.
Manufacturing using laser cutting of curved stripes in a metal slab.
Experimental evaluation using time-domain spectroscopy.

Main Results:

The diffractive element successfully focuses and deflects terahertz radiation at a specific frequency.

More Related Videos

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Published on: January 28, 2021

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Related Experiment Videos

Last Updated: Jun 1, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Automated Delivery of Microfabricated Targets for Intense Laser Irradiation Experiments

Published on: January 28, 2021

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

The element functions as both a spatial and spectral filter.

Effective separation of terahertz signals from broadband thermal loads was demonstrated.

Conclusions:

The developed diffractive optical element is suitable for passive detection devices requiring terahertz signal isolation.
This technology offers a novel solution for enhancing signal-to-noise ratios in THz applications.