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22.5-W narrow-linewidth diamond Brillouin laser at 1064 nm
Optics Letters
|October 14, 2022
Summary
Researchers developed a high-power diamond Brillouin laser (DBL) using unguided configurations. This advancement offers a path to low-noise, narrow-linewidth lasers with tens-of-watts power output.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Stimulated Brillouin scattering (SBS) offers a route to narrow-linewidth, low-noise lasers.
- Existing SBS lasers predominantly use guided-wave configurations, limiting power scaling and flexibility.
Purpose of the Study:
- To explore unguided Brillouin lasers (BLs) for enhanced power scaling and wavelength flexibility.
- To report a novel diamond Brillouin laser (DBL) design.
Main Methods:
- Utilized a diamond Brillouin laser (DBL) with doubly resonant technology.
- Operated the DBL at a wavelength of 1064 nm.
Main Results:
- Achieved a Brillouin output power of 22.5 W.
- Obtained a narrow laser linewidth of 46.9 kHz.
- Suppressed amplified spontaneous emission (ASE) noise by 35 dB.
Conclusions:
- Demonstrated the potential of unguided BLs for high-power, narrow-linewidth laser generation.
- The DBL represents a significant step towards high-power (tens-of-watts+) Brillouin oscillators with kHz-linewidths.
