Table 1 The fitted coefficients A2 and A4, as mentioned in the text, for each temperature.

From: THz Acoustic Spectroscopy by using Double Quantum Wells and Ultrafast Optical Spectroscopy

Temperature

A2[(ps)2(μm)−1]

A4[(ps)4(μm)−1]

300 K

1.13

0.76

300 K

1.25

1.05

280 K

0.79

0.91

260 K

0.57

1.23

240 K

0.56

0.81

220 K

0.78

0.76

200 K

1.16

0.65

180 K

0.87

1.07

160 K

0.95

1.14

  1. The values in bold type come from different set of measurements.
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