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Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback
Name
oe-27-26-37714.pdf
Description
Published version
Size
563.8 KB
Format
Adobe PDF
Checksum (MD5)
262affa86831e4b46b2d22c9e03a7172
Author(s)
Yamoah, Megan
Braverman, Boris
Pedrozo-Peñafiel, Edwin
Kawasaki, Akio
Zlatković, Bojan
Vuletić, Vladan
Journal
Optics Express
Publisher
The Optical Society
Version
Final published version
Abstract
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. We demonstrate a combination of optical and electronic feedback that significantly narrows the linewidth of distributed Bragg reflector lasers (DBRs). We use optical feedback from a long external fiber path to reduce the high-frequency noise of the laser. An electro-optic modulator placed inside the optical feedback path allows us to apply electronic feedback to the laser frequency with very large bandwidth, enabling robust and stable locking to a reference cavity that suppresses low-frequency components of laser noise. The combination of optical and electronic feedback allows us to significantly lower the frequency noise power spectral density of the laser across all frequencies and narrow its linewidth from a free-running value of 1.1 MHz to a stabilized value of 1.9 kHz, limited by the detection system resolution. This approach enables the construction of robust lasers with sub-kHz linewidth based on DBRs across a broad range of wavelengths.
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
10.1364/OE.27.037714
