Issue 44, 2023

BaO–TeO2–MoO3 glass: excellent candidate for acousto-optic modulators with high diffraction efficiency, fast response, and stable operation

Abstract

Acousto-optic modulators (AOMs) have been extensively utilized in laser technology, network communications, and radar spectrum analysis. In this paper, a BaO–TeO2–MoO3 (BTM) glass was studied as an acousto-optic material due to its large refractive index ranging from 2.18 to 2.07 as the wavelength changes from 546 nm to 2325 nm. The BTM glass not only exhibits a suitable sound velocity of 3537 m s−1, but also has a small acoustic attenuation of 0.33 dB cm−1, which is beneficial for high quality AOMs. Therefore, a BTM glass Q-switch operating at 1064 nm was successfully designed and fabricated. The diffraction efficiency, diffraction angle, rise time, and fall time were determined to be 85.6%, 1.6°, 38 ns, and 41 ns, respectively, which are comparable to those of a TeO2 crystal AOM. A 1064 nm pulsed laser with a narrowest pulse width of 27 ns at a repetition rate of 5 kHz, corresponding to a pulse energy of 86.9 μJ and a peak power of 2.9 kW, was realized. The results suggest that the BTM glass is a promising candidate for high-quality AOMs.

Graphical abstract: BaO–TeO2–MoO3 glass: excellent candidate for acousto-optic modulators with high diffraction efficiency, fast response, and stable operation

Article information

Article type
Paper
Submitted
20 Sep 2023
Accepted
26 Oct 2023
First published
26 Oct 2023

J. Mater. Chem. C, 2023,11, 15750-15758

BaO–TeO2–MoO3 glass: excellent candidate for acousto-optic modulators with high diffraction efficiency, fast response, and stable operation

F. Hu, F. Guo, Z. Wang, X. Tao and Z. Gao, J. Mater. Chem. C, 2023, 11, 15750 DOI: 10.1039/D3TC03429A

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