High-power high-beam-quality 1550-nm-wavelength InP-based photonic-crystal surface-emitting laser

In this talk, we discuss our recent development of InP-based photonic-crystal surface-emitting lasers (PCSELs) featuring a double-lattice photonic-crystal structure designed for high-power single-mode operation at a wavelength of 1550 nm. The 1550-nm PCSELs are attractive for applications requiring eye safety, such as light detection and ranging (LiDAR) and Free-Space Optical Communications (FSO). We demonstrate output powers exceeding 300 mW under CW conditions at 25°C. Furthermore, our devices exhibit highly stable single-mode oscillation with a side-mode suppression ratio of over 60 dB and a narrow divergence angle below 1° at injection currents up to 2 A and temperatures ranging from 15°C to 60°C. These results indicate that our PCSELs are promising light sources for applications requiring high-power, single-mode, and high-beam-quality characteristics at the 1550 nm wavelength.

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Publication Details

Published
2025-03-19
DOI
https://doi.org/10.1117/12.3037797
Citations
1
Primary Topic
Photonic Crystals and Applications
Type
article
Field-Weighted Citation Impact
1.25
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High-power high-beam-quality 1550-nm-wavelength InP-based photonic-crystal surface-emitting laser

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article en
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Abstract

In this talk, we discuss our recent development of InP-based photonic-crystal surface-emitting lasers (PCSELs) featuring a double-lattice photonic-crystal structure designed for high-power single-mode operation at a wavelength of 1550 nm. The 1550-nm PCSELs are attractive for applications requiring eye safety, such as light detection and ranging (LiDAR) and Free-Space Optical Communications (FSO). We demonstrate output powers exceeding 300 mW under CW conditions at 25°C. Furthermore, our devices exhibit highly stable single-mode oscillation with a side-mode suppression ratio of over 60 dB and a narrow divergence angle below 1° at injection currents up to 2 A and temperatures ranging from 15°C to 60°C. These results indicate that our PCSELs are promising light sources for applications requiring high-power, single-mode, and high-beam-quality characteristics at the 1550 nm wavelength.

Kyoto University (JP), Sumitomo Electric Industries (Japan) (JP)
Affordable and clean energy
Openalex Percentile: Top 23%
Photonic Crystals and Applications
1.25
DOISourceOpenAlex
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