153 citations · 295 across the 12 of their papers we have counts for
14 papers
Precise Measurement of Refractive Indices in Thin Film Heterostructures
Lukas W. Perner, Gar-Wing Truong, David Follman +5
We present a robust, precise, and accurate method to simultaneously measure the refractive indices of two transparent materials within an interference coating. This is achieved by…
Simultaneous Measurement of Mid-Infrared Refractive Indices in Thin-Film Heterostructures: Methodology and Results for GaAs/AlGaAs
Lukas W. Perner, Gar-Wing Truong, David Follman +5
We present our results for simultaneous measurement of the refractive indices of gallium arsenide (GaAs) and aluminum gallium arsenide (AlGaAs) from $2.…
Surpassing the Standard Quantum Limit using an Optical Spring
Torrey Cullen, Scott Aronson, Ron Pagano +9
Quantum mechanics places noise limits and sensitivity restrictions on physical measurements. The balance between unwanted backaction and the precision of optical measurements impos…
Mid-infrared supermirrors with finesse exceeding 400 000
G. -W. Truong, L. W. Perner, D. M. Bailey +9
For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical inter…
Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm
G. Winkler, L. W. Perner, G. -W. Truong +13
We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 p…
Near-Infrared Scanning Cavity Ringdown for Optical Loss Characterization of Supermirrors
Gar-Wing Truong, Georg Winkler, Tobias Zederbauer +6
A cavity ringdown system for probing the spatial variation of optical loss across high-reflectivity mirrors is described. This system is employed to examine substrate-transferred c…
Quantum back action cancellation in the audio band
Jonathan Cripe, Torrey Cullen, Yanbei Chen +4
We report on the cancellation of quantum back action noise in an optomechanical cavity. We perform two measurements of the displacement of the microresonator, one in reflection of…
Room temperature optomechanical squeezing
Nancy Aggarwal, Torrey Cullen, Jonathan Cripe +7
The radiation-pressure driven interaction of a coherent light field with a mechanical oscillator induces correlations between the amplitude and phase quadratures of the light. Thes…
Broadband reduction of quantum radiation pressure noise via squeezed light injection
Min Jet Yap, Jonathan Cripe, Georgia L. Mansell +9
We present the reduction and manipulation of quantum radiation pressure noise (QRPN) in an optomechanical cavity with the injection of squeezed light. The optomechanical system con…
Mechanical Ringdown Studies of Large-Area Substrate-Transferred GaAs/AlGaAs Crystalline Coatings
Steven D. Penn, Maya M. Kinley-Hanlon, Ian A. O. MacMillan +5
We investigated elastic loss in GaAs/AlGaAs multilayers to help determine the suitability of these coatings for future gravitational wave detectors. We measured large (…
Observation of a room-temperature oscillator's motion dominated by quantum fluctuations over a broad audio-frequency band
Jonathan Cripe, Nancy Aggarwal, Robert Lanza +7
We report on the broadband measurement of quantum radiation pressure noise (QRPN) in an optomechanical cavity at room temperature over a broad range of frequencies relevant to grav…
Direct Frequency Comb Measurement of OD + CO -> DOCO Kinetics
Bryce J. Bjork, Thinh Q. Bui, Oliver H. Heckl +9
The kinetics of the OH + CO reaction, fundamental to both atmospheric and combustion chemistry, are complex due to the formation of the HOCO intermediate. Despite extensive studies…
High-performance near- and mid-infrared crystalline coatings
Garrett D. Cole, Wei Zhang, Bryce J. Bjork +11
Substrate-transferred crystalline coatings have recently emerged as a groundbreaking new concept in optical interference coatings. Building upon our initial demonstration of this t…
Coherent Cancellation of Photothermal Noise in GaAs/AlGaAs Bragg Mirrors
Tara Chalermsongsak, Evan D. Hall, Garrett D. Cole +7
Thermal noise is a limiting factor in many high-precision optical experiments. A search is underway for novel optical materials with reduced thermal noise. One such pair of materia…