Presentation
5 March 2022 A compact stabilized three-laser optical pump system for an imaging system based on THz-to-visible conversion via atomic vapour
Brynmor E. Jones, Jack W. Thomas, Adam Selyem, Shaun Jones, Douglas Bremner, Lucy A. Downes, Philip A. Marsden, Pauline Brown, Kevin J. Weatherill
Author Affiliations +
Abstract
THz imaging often struggles to achieve necessary framerates for applications, but recent demonstrations show that an imaging system based upon THz-to-optical conversion in atomic vapour can provide ultrahigh speeds while retaining sensitivity with optical cameras. This atomic vapour imaging requires a multi-frequency near-IR optical pumping system, and we demonstrate a compact system to provide the stable frequencies required for conversion of 0.55 THz light to visible (green) in caesium atoms. Through the integration of distributed feedback (DFB) laser diodes and a compact extended cavity diode laser, and spectroscopy and offset locks based on open-source FPGA and Arduino code, it approaches suitability for wider industrial application.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brynmor E. Jones, Jack W. Thomas, Adam Selyem, Shaun Jones, Douglas Bremner, Lucy A. Downes, Philip A. Marsden, Pauline Brown, and Kevin J. Weatherill "A compact stabilized three-laser optical pump system for an imaging system based on THz-to-visible conversion via atomic vapour", Proc. SPIE PC12009, Quantum Sensing and Nano Electronics and Photonics XVIII, PC120090J (5 March 2022); https://doi.org/10.1117/12.2609709
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KEYWORDS
Imaging systems

Terahertz radiation

Cesium

Imaging spectroscopy

Imaging technologies

Semiconductor lasers

Spectroscopy

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