TY - JOUR AU - Goldfain, Aaron AU - Yung, Christopher AU - Briggman, Kimberly AU - Hwang, Jeeseong C2 - Journal of the Acoustical Society of America DA - 2021-06-29 04:06:00 DO - https://doi.org/10.1121/10.0005431 LA - en M1 - 149 PB - Journal of the Acoustical Society of America PY - 2021 TI - Optical phase contrast imaging for absolute, quantitative measurements of ultrasonic fields with frequencies up to 20MHz UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931707 ER -