Low Cost Fast Frequency Switching Driver for Acousto-Optic Modulators Used in Laser Cooling
In many laser atom cooling experiments, Acousto-Optic Modulators (AOM) are used to modulate a laser beam frequency close to an electronic resonance of the atoms. Commercially available RF drivers for the AOMs tend to be expensive ($2k and above) and can also require supplementary equipment such as power supplies and amplifiers. This article presents a low cost, compact, re-configurable, and portable modulator driver system. This system can switch between two frequencies within a period of few hundreds of ns, while giving the user complete control over the frequency range and output power up to about 2 W. This fast switching allows to toggle a laser beam between two optical fibers which could be used for cooling, imaging, or optical pumping of the laser-cooled atoms.
A. Bhandare et al., "Low Cost Fast Frequency Switching Driver for Acousto-Optic Modulators Used in Laser Cooling," HardwareX, vol. 5, Elsevier Ltd, Apr 2019.
The definitive version is available at https://doi.org/10.1016/j.ohx.2019.e00054
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Acousto-Optic Modulator (AOM) Driver system; Doppler cooling; RF modulation system
International Standard Serial Number (ISSN)
Article - Journal
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