TY - RPRT TI - Profilometry based on two-photon absorption in a silicon avalanche photodiode. AU - Yosuke Tanaka AU - Naoya Sako AU - Takashi Kurokawa AU - Hiroyuki Tsuda AU - Mitsuo Takeda PY - 2003 DO - 10.1364/ol.28.000402 UR - https://pubmed.ncbi.nlm.nih.gov/12659260/ ID - 12659260 ER -