5 papers
Real-time tissue-equivalent measurement of individual clinical radiotherapy pulses
Fernanda C. Rodrigues-Machado, Katherine Szabo, Jingyi Bian +5
We apply the precision tools of cavity-enhanced absorption sensing to clinical oncology, demonstrating a dosimeter paradigm in which a centimeter-scale volume of water serves as a…
Fabricating fiber cavity mirror substrates compatible with high coupling efficiency
Michael Caouette-Mansour, Thomas J. Clark, Valeria Mosso Tsedilkina +1
Fiber optical cavities offer small mode volumes and correspondingly strong light-matter interactions in an open Fabry-Perot geometry. However, existing fabrication techniques do no…
Broadband Thermal Noise Correlations Induced by Measurement Back-Action
Jiaxing Ma, Thomas J. Clark, Vincent Dumont +1
Modern mechanical sensors increasingly measure motion with precision sufficient to resolve the fundamental thermal noise floor over a broad band. Compared to traditional sensors --…
Detuning-symmetric laser cooling of many mechanical modes with a photothermally modified cavity
Thomas J. Clark, Jiaxing Ma, Jack C. Sankey
We simultaneously cool 100 mechanical modes of a membrane with a photothermally modified optical cavity driven by a single blue-detuned laser. In contrast to radiation pre…
Assessing Students' Understanding of Uncertainty in Undergraduate Physics Laboratory Courses at a Major Canadian University
Matheus A. S. Pessôa, Rebecca Brosseau, Benjamin J. Dringoli +7
Over the last five years, the McGill University Office of Science Education (OSE) has partnered with faculty members from the Department of Physics to form an education research gr…