Table 1 PCA performance under 32Vpp, 20 kHz bias and optical pump fluence 3.85 mJ/cm2.

From: A modulation-doped heterostructure-based terahertz photoconductive antenna emitter with recessed metal contacts

PCA

THz peak to peak amplitude (nA)

Emission bandwidth (THz)

Maximum dynamic range (dB)

Integrated THz power (nA2·THz)

SI-GaAs

4.04

3.2

60

4.5 × 10–3

LT-GaAs

20.92

3.2

60

8.51 × 10–2

MDH (Top)

11.37

3.2

61

2.85 × 10–2

MDH (Recessed)

30.88

3.2

62

0.202

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