A5012148209- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Spectroscopy and Laser Applications
- Advanced MEMS and NEMS Technologies
- Photonic and Optical Devices
- Advanced Frequency and Time Standards
- Quantum Information and Cryptography
- Geophysics and Sensor Technology
- Superconducting and THz Device Technology
- Advanced Thermodynamics and Statistical Mechanics
- Pulsars and Gravitational Waves Research
- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
Thorlabs (United States)
2022-2024
Tohoku University
2019-2020
Gravity generated by large masses has been observed using a variety of probes from atomic interferometers to torsional balances. However, gravitational coupling between small never so far. Here, we demonstrate sensitive displacement sensing the Brownian motion an optically trapped 7 mg pendulum whose natural quality factor is increased 10^{8} through dissipation dilution. The sensitivity for integration time one second corresponds in millimeter-scale experiment probe and 100 source mass,...
In this Perspective we summarize the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs (AlGaAs) crystalline coatings interferometric gravitational-wave (GW) detectors. These topics were originally presented in a workshop{\dag} bringing together members GW community from laser interferometer observatory (LIGO), Virgo, KAGRA collaborations, along with scientists precision optical metrology community, industry partners extensive expertise...
We present the development of a high-$Q$ monolithic silica pendulum weighing 7 milligram. The measured $Q$ value for mode at 2.2 Hz was $2.0\ifmmode\times\else\texttimes\fi{}{10}^{6}$. To best our knowledge this is lowest dissipative milligram-scale mechanical oscillator to date. By employing suspension system, optomechanical displacement sensor gravity measurements we recently reported in Matsumoto et al. [Phys. Rev. Lett. 122, 071101 (2019)] can be improved realize quantum-noise-limited...
Abstract For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length intensity enhancement. Optical interference coatings in the visible near-infrared (NIR) spectral regions have achieved total losses below 2 parts per million (ppm), enabling a cavity finesse excess of 1 million. However, such advancements been lacking mid-infrared (MIR), despite substantial scientific interest. Here, we demonstrate significant...
We present a number of approaches, currently in experimental development our research groups, toward the general problem macroscopic quantum mechanics, i.e., manifestations noise and fluctations with (engineered microfabricated by man) mechanical systems. Discussed experiments include pendulum, torsion ng-scale phononic-crystal silicon nitride membrane, μ g-scale quartz resonator, mg-scale mirrors for optical levitation. also discuss relevant applications to thermometry optomechanical...
For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length intensity enhancement. Optical interference coatings in the visible near-infrared (NIR) spectral regions have achieved total losses below 2 parts per million (ppm), enabling a cavity finesse excess of 1 million. However, such advancements been lacking mid-infrared (MIR), despite substantial scientific interest. Here, we demonstrate significant breakthrough...
We fabricate and characterize substrate-transferred single-crystal mirror coatings with 9.33 ± 0.17 ppm of transmittance 4.27 0.52 excess optical loss, corresponding to a transmission-loss dominated reflectance 99.9986% at 4.45 µm.