AI Article Synopsis
- A new dual pump cascading Brillouin random fiber laser (DP-CBRFL) is introduced, which significantly enhances Brillouin gain and achieves an ultra-narrow linewidth of 95.5 Hz using just 200 mW of pump power.
- This laser system offers a more stable Brillouin gain spectrum and reduced mode density compared to traditional Brillouin random fiber lasers, leading to lower intensity and frequency noise, particularly at low frequencies.
- It also demonstrates a high slope efficiency of 28, even at a pump power of 1.1 W, due to its effective suppression of high-order Stokes light.
Article Abstract
A cascading Brillouin random fiber laser with a dual pump (DP-CBRFL) is proposed and demonstrated. The DP-CBRFL can improve the Brillouin gain significantly to achieve an ultra-narrow linewidth (95.5 Hz) with 200 mW pump power, due to two cascading Brillouin gain fibers with an identical Brillouin frequency shift. Compared with the general Brillouin random fiber laser, the proposed random fiber laser has a more stable Brillouin gain spectrum and a lower mode density, which makes it have a lower intensity noise and frequency noise, especially in the low-frequency range. Meanwhile, it exhibits a high slope efficiency of 28 even if the pump power has reached 1.1 W due to the strong suppression ability of the high-order Stokes light.
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| http://dx.doi.org/10.1364/OL.503725 | DOI Listing |
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