Details
| Original language | English |
|---|---|
| Article number | 191105 |
| Journal | Applied physics letters |
| Volume | 122 |
| Issue number | 19 |
| Publication status | Published - 9 May 2023 |
Abstract
The sensitivities of current gravitational-wave detectors are limited around signal frequencies of 100 Hz by mirror thermal noise. One proposed option to reduce this thermal noise is to operate the detectors in a higher-order spatial laser mode. This operation would require a high-power laser input beam in such a spatial mode. Here, we discuss the generation of the Hermite-Gaussian modes HG 2 , 2 , HG 3 , 3 , and HG 4 , 4 using one water-cooled spatial light modulator (SLM) at a continuous-wave optical input power of up to 85 W. We report unprecedented conversion efficiencies for a single SLM of about 43%, 42%, and 41%, respectively, and demonstrate that the SLM operation is robust against the high laser power. This is an important step toward the implementation of higher-order laser modes in future gravitational-wave detectors.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Applied physics letters, Vol. 122, No. 19, 191105, 09.05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-power laser beam in higher-order Hermite–Gaussian modes
AU - Behren, B. Von
AU - Heinze, Joscha
AU - Bode, Nina
AU - Willke, Benno
N1 - Funding Information: We acknowledge the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC-2123 QuantumFrontiers (390837967).
PY - 2023/5/9
Y1 - 2023/5/9
N2 - The sensitivities of current gravitational-wave detectors are limited around signal frequencies of 100 Hz by mirror thermal noise. One proposed option to reduce this thermal noise is to operate the detectors in a higher-order spatial laser mode. This operation would require a high-power laser input beam in such a spatial mode. Here, we discuss the generation of the Hermite-Gaussian modes HG 2 , 2 , HG 3 , 3 , and HG 4 , 4 using one water-cooled spatial light modulator (SLM) at a continuous-wave optical input power of up to 85 W. We report unprecedented conversion efficiencies for a single SLM of about 43%, 42%, and 41%, respectively, and demonstrate that the SLM operation is robust against the high laser power. This is an important step toward the implementation of higher-order laser modes in future gravitational-wave detectors.
AB - The sensitivities of current gravitational-wave detectors are limited around signal frequencies of 100 Hz by mirror thermal noise. One proposed option to reduce this thermal noise is to operate the detectors in a higher-order spatial laser mode. This operation would require a high-power laser input beam in such a spatial mode. Here, we discuss the generation of the Hermite-Gaussian modes HG 2 , 2 , HG 3 , 3 , and HG 4 , 4 using one water-cooled spatial light modulator (SLM) at a continuous-wave optical input power of up to 85 W. We report unprecedented conversion efficiencies for a single SLM of about 43%, 42%, and 41%, respectively, and demonstrate that the SLM operation is robust against the high laser power. This is an important step toward the implementation of higher-order laser modes in future gravitational-wave detectors.
UR - http://www.scopus.com/inward/record.url?scp=85159681217&partnerID=8YFLogxK
U2 - 10.1063/5.0137085
DO - 10.1063/5.0137085
M3 - Article
VL - 122
JO - Applied physics letters
JF - Applied physics letters
SN - 0003-6951
IS - 19
M1 - 191105
ER -