Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Gretarsson, Andri M."'
Autor:
Gretarsson, Andri M., D'Ambrosio, Erika, Frolov, Valery, O'Reilly, Brian, Fritschel, Peter K.
We analyze the electromagnetic fields in a Pound-Drever-Hall locked, marginally unstable, Fabry-Perot cavity as a function of small changes in the cavity length during resonance. More specifically, we compare the results of a detailed numerical model
Externí odkaz:
http://arxiv.org/abs/0708.3470
Autor:
Penn, Steven D., Ageev, Alexander, Busby, Dan, Harry, Gregory M., Gretarsson, Andri M., Numata, Kenji, Willems, Phil
We have compiled measurements of the mechanical loss in fused silica from samples spanning a wide range of geometries and resonant frequency in order to model the known variation of the loss with frequency and surface-to-volume ratio. This improved u
Externí odkaz:
http://arxiv.org/abs/gr-qc/0507097
Autor:
Penn, Steven D., Sneddon, Peter H., Armandula, Helena, Betzwieser, Joseph C., Cagnoli, Gianpietro, Camp, Jordan, Crooks, D. R. M., Fejer, Martin M., Gretarsson, Andri M., Harry, Gregory M., Hough, Jim, Kittelberger, Scott E., Mortonson, Michael J., Route, Roger, Rowan, Sheila, Vassiliou, Christophoros C.
Publikováno v:
Class.Quant.Grav. 20 (2003) 2917-2928
Current interferometric gravitational wave detectors use test masses with mirror coatings formed from multiple layers of dielectric materials, most commonly alternating layers of SiO2 (silica) and Ta2O5 (tantala). However, mechanical loss in the Ta2O
Externí odkaz:
http://arxiv.org/abs/gr-qc/0302093
Autor:
Gretarsson, Andri M.
Some references for the breaking strength of fused silica fibers compiled in 1999.
Comment: 2 pages. 1 figure. Compiled in July, 1999
Comment: 2 pages. 1 figure. Compiled in July, 1999
Externí odkaz:
http://arxiv.org/abs/cond-mat/0205448
Autor:
Harry, Gregory M., Gretarsson, Andri M., Saulson, Peter R., Penn, Steven D., Startin, William J., Kittelberger, Scott, Crooks, D. R. M., Hough, Jim, Cagnoli, Gianpietro, Nakagawa, Norio, Rowan, Sheila, Fejer, Martin M.
Publikováno v:
Class.Quant.Grav. 19 (2002) 897-918
We report on thermal noise from the internal friction of dielectric coatings made from alternating layers of Ta2O5 and SiO2 deposited on fused silica substrates. We present calculations of the thermal noise in gravitational wave interferometers due t
Externí odkaz:
http://arxiv.org/abs/gr-qc/0109073
Autor:
Penn, Steven D., Harry, Gregory M., Gretarsson, Andri M., Kittelberger, Scott E., Saulson, Peter R., Schiller, John J., Smith, Joshua R., Swords, Sol O.
Publikováno v:
Rev.Sci.Instrum. 72 (2001) 3670-3673
We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic n
Externí odkaz:
http://arxiv.org/abs/gr-qc/0009035
Autor:
Gretarsson, Andri M., Rowan, Sheila, Cagnoli, Geppo, Harry, Gregory M., Hough, Jim, Penn, Steven D., Saulson, Peter R., Startin, William J.
Publikováno v:
Phys.Lett. A270 (2000) 108-114
The use of fused-silica ribbons as suspensions in gravitational wave interferometers can result in significant improvements in pendulum mode thermal noise. Surface loss sets a lower bound to the level of noise achievable, at what level depends on the
Externí odkaz:
http://arxiv.org/abs/gr-qc/9912057
Autor:
Gretarsson, Andri M., Harry, Gregory M., Penn, Steven D., Saulson, Peter R., Schiller, John J., Startin, William J.
We report on the mechanical loss in fused silica samples with various surface treatments and compare them with samples having an optical coating. Mild surface treatments such as washing in detergent or acetone were not found to affect the mechanical
Externí odkaz:
http://arxiv.org/abs/physics/9911040
Publikováno v:
Rev.Sci.Instrum. 70 (1999) 4081-4087
For thermal noise considerations of LIGO suspensions, the sources of dissipation in the suspending fibers must be analyzed. To determine the dissipation induced by the surface of fused silica fibers, we measured the quality factor of fibers having va
Externí odkaz:
http://arxiv.org/abs/physics/9904015