Abstract
In this study, two series of GaxSb40-xS60 (x = 4, 6, 8, 10 mol%) and GaySb36S64-y (y = 3, 5, 6 mol%) glasses were prepared and the relationship between their compositional and acousto-optic (AO) properties was investigated systematically for the first time. In the GaySb36S64-y system, the AO figure of merit (M2) increased as the Ga increased, and the maximum M2 of the Ga6Sb36S58 glass was 455.78 × 10−18 s3/g, which is ∼301 times greater than that of fused silica and ∼2.5 times greater than that of As2S3 chalcogenide (ChG) glass at 1550 nm. However, its thermo-optic coefficients (dn/dT) varied greatly (32.1 × 10−6 °C−1–57.2 × 10−6 °C−1), and acoustic attenuations (α) at 10 MHz were high, from 5.446 dB/cm to 7.274 dB/cm. In the GaxSb40-xS60 glass system, the M2 value and α at different ultrasonic frequencies gradually decreased with the improvement of Ga. Compared with the GaySb36S64-y system, the GaxSb40-xS60 glass system had lower α (at 10 MHz) and dn/dT, which are 5.001 dB/cm–5.563 dB/cm and 17.3 × 10−6 °C−1–55.6 × 10−6 °C−1, respectively. These results provide a significant reference for the further development of novel ChG glasses and help expand their application fields.
Published Version
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