High-speed nanometer-resolved imaging vibrometer and velocimeter

作者：Mahjoubfar Ata^*; Goda Keisuke; Ayazi Ali; Fard Ali; Kim Sang Hyup; Jalali Bahram

来源：Applied Physics Letters, 2011, 98(10): 101107.

DOI：10.1063/1.3563707

Conventional laser vibrometers are incapable of performing multidimensional vibrometry at high speeds because they build on single-point measurements and rely on beam scanning, significantly limiting their utility and precision. Here we introduce a laser vibrometer that performs high-speed multidimensional imaging-based vibration and velocity measurements with nanometer-scale axial resolution without the need for beam scanning. As a proof-of-concept, we demonstrate real-time microscopic imaging of acoustic vibrations with 1 nm axial resolution, 1200 image pixels, and 30 ps dwell time at 36.7 MHz scan rate.

• 出版日期2011-3-7