A new type of interferometric fiber sensor based on a MachZehnder FabryPerot hybrid scheme has been experimentally demonstrated. The interferometer combines the benefits of both a doublepath configuration and an optical resonator, leading to recordhigh strain and phase resolutions limited only by the intrinsic thermal noise in optical fibers across a broad frequency range. Using only offtheshelf components, the sensor is able to achieve noiselimited strain resolutions of 40 f
We explore the prospects and benefits of combining the techniques of cavity optomechanics with efforts to image spins using magnetic resonance force microscopy (MRFM). In particular, we focus on a common mechanical resonator used in cavity optomechanics—highstress stoichiometric silicon nitride (Si_{3}N_{4}) membranes. We present experimental work with a ‘trampoline’ membrane resonator that has a quality factor above 10^{6}and an order of magnitude lower mass than a comparable standard membrane resonators. Such highstress resonators are on a trajectory to reach 0.1
 Award ID(s):
 1734006
 NSFPAR ID:
 10304583
 Publisher / Repository:
 IOP Publishing
 Date Published:
 Journal Name:
 New Journal of Physics
 Volume:
 21
 Issue:
 4
 ISSN:
 13672630
 Page Range / eLocation ID:
 Article No. 043049
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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