TY - JOUR T1 - 175 GHz, 400-fs-pulse harmonically mode-locked surface emitting semiconductor laser JO - Optics Express PY - 2012/03/26 AU - Wilcox KG AU - Quarterman AH AU - Apostolopoulos V AU - Beere HE AU - Farrer I AU - Ritchie DA AU - Tropper AC ED - DO - DOI: 10.1364/oe.20.007040 PB - The Optical Society VL - 20 IS - 7 SP - 7040 EP - 7040 Y2 - 2025/08/14 ER -