TY - JOUR T1 - Emission of collimated THz pulses from photo-excited semiconductors JO - Semiconductor Science and Technology PY - 2004/03/15 AU - Johnston MB AU - Dowd A AU - Driver R AU - Linfield EH AU - Davies AG AU - Whittaker DM ED - DO - DOI: 10.1088/0268-1242/19/4/147 VL - 19 IS - 4 SPEC. ISS. SP - S449 EP - S451 Y2 - 2026/01/20 ER -