Details
| Original language | English |
|---|---|
| Pages (from-to) | 28523-28533 |
| Number of pages | 11 |
| Journal | Optics Express |
| Volume | 27 |
| Issue number | 20 |
| Early online date | 20 Sept 2019 |
| Publication status | Published - 30 Sept 2019 |
Abstract
Low noise, high power single-frequency lasers and amplifiers are key components of interferometric gravitational wave detectors. One way to increase the detector sensitivity is to increase the power injected into the interferometers. We developed a fiber amplifier engineering prototype with a pump power limited output power of 200 W at 1064 nm. No signs of stimulated Brillouin scattering are observed at 200 W. At the maximum output power the polarization extinction ratio is above 19 dB and the fractional power in the fundamental transverse mode (TEM00) was measured to be 94.8 %. In addition, measurements of the frequency noise, relative power noise, and relative pointing noise were performed and demonstrate excellent low noise properties over the entire output power slope. In the context of single-frequency fiber amplifiers, the measured relative pointing noise below 100 Hz and the higher order mode content is, to the best of our knowledge, at 200 W the lowest ever measured. A long-term test of more than 695 h demonstrated stable operation without beam quality degradation. It is also the longest single-frequency fiber amplifier operation at 200 W ever reported.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Optics Express, Vol. 27, No. 20, 30.09.2019, p. 28523-28533.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High power, single-frequency, monolithic fiber amplifier for the next generation of gravitational wave detectors
AU - Wellmann, Felix
AU - Steinke, Michael
AU - Meylahn, Fabian
AU - Bode, Nina
AU - Willke, Benno
AU - Overmeyer, Ludger
AU - Neumann, Jörg
AU - Kracht, Dietmar
N1 - Funding information: Max-Planck-Gesellschaft. We would like to thank Thomas Theeg from FiberBridge Photonics GmbH for the ongoing and successful cooperation in the field of fiber component technology.
PY - 2019/9/30
Y1 - 2019/9/30
N2 - Low noise, high power single-frequency lasers and amplifiers are key components of interferometric gravitational wave detectors. One way to increase the detector sensitivity is to increase the power injected into the interferometers. We developed a fiber amplifier engineering prototype with a pump power limited output power of 200 W at 1064 nm. No signs of stimulated Brillouin scattering are observed at 200 W. At the maximum output power the polarization extinction ratio is above 19 dB and the fractional power in the fundamental transverse mode (TEM00) was measured to be 94.8 %. In addition, measurements of the frequency noise, relative power noise, and relative pointing noise were performed and demonstrate excellent low noise properties over the entire output power slope. In the context of single-frequency fiber amplifiers, the measured relative pointing noise below 100 Hz and the higher order mode content is, to the best of our knowledge, at 200 W the lowest ever measured. A long-term test of more than 695 h demonstrated stable operation without beam quality degradation. It is also the longest single-frequency fiber amplifier operation at 200 W ever reported.
AB - Low noise, high power single-frequency lasers and amplifiers are key components of interferometric gravitational wave detectors. One way to increase the detector sensitivity is to increase the power injected into the interferometers. We developed a fiber amplifier engineering prototype with a pump power limited output power of 200 W at 1064 nm. No signs of stimulated Brillouin scattering are observed at 200 W. At the maximum output power the polarization extinction ratio is above 19 dB and the fractional power in the fundamental transverse mode (TEM00) was measured to be 94.8 %. In addition, measurements of the frequency noise, relative power noise, and relative pointing noise were performed and demonstrate excellent low noise properties over the entire output power slope. In the context of single-frequency fiber amplifiers, the measured relative pointing noise below 100 Hz and the higher order mode content is, to the best of our knowledge, at 200 W the lowest ever measured. A long-term test of more than 695 h demonstrated stable operation without beam quality degradation. It is also the longest single-frequency fiber amplifier operation at 200 W ever reported.
UR - http://www.scopus.com/inward/record.url?scp=85072723447&partnerID=8YFLogxK
U2 - 10.1364/oe.27.028523
DO - 10.1364/oe.27.028523
M3 - Article
C2 - 31684602
AN - SCOPUS:85072723447
VL - 27
SP - 28523
EP - 28533
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 20
ER -