Mechanical Stress Wave Noncontact Laser Detection Method of Power Semiconductor Devices - Observation of Low-Frequency Signals. - Qiying Li; Yunze He; Mengchuan Li; Yang Ping; Longhai Tang; Xuefeng Geng; Guangxin Wang; Shan Chang; Jie Zhang 172 (IEEE Trans. Instrum. Meas., 2024)