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We report experimental results of using GaSe crystals for the broadband detection of terahertz (THz) waves from 100GHzto30THz. In comparison, the THz wave field amplitude measured with a GaSe crystal exceeds that detected by a ZnTe crystal with a comparable detection bandwidth. The central frequency is tunable by varying the angle between the incident THz radiation and the crystal surface normal.
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Liu et al. (2004) studied this question.
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