| Autor: |
Behren, B. von, Heinze, Joscha, Bode, Nina, Willke, Benno |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 5/9/2023, Vol. 122 Issue 19, p1-4, 4p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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