VCSEL with intra-cavity circular Bragg gratings for single-mode operation

Shanting Hu; Xinchen Zhang; Chengyuan Lee; Bo Tian; Lei Zhu; Xiangjun Xin

doi:10.1063/5.0265473

VCSEL with intra-cavity circular Bragg gratings for single-mode operation

Shanting Hu^*, Xinchen Zhang, Chengyuan Lee, Bo Tian, Lei Zhu, Xiangjun Xin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs). By periodically etching the surface of a half-cavity VCSEL surface into concentric rings, first-order Bragg gratings are formed in the lateral direction, providing an additional mechanism of optical confinement at the Bragg wavelength. To enable lasing, dielectric DBRs are evaporated on the top. We fabricated the device with a large oxidized aperture size of 11 μm. Experimental results demonstrate the impact of the CBG structure on mode selection and power convergence, with the proposed VCSEL achieving continuous single-mode operation and an output power exceeding 3.7 mW. Dynamic responses show that our device is highly promising for high-speed applications, particularly for transmission distances of up to 10 km.

Original language	English
Article number	055123
Journal	AIP Advances
Volume	15
Issue number	5
DOIs	https://doi.org/10.1063/5.0265473
Publication status	Published - 1 May 2025
Externally published	Yes

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title = "VCSEL with intra-cavity circular Bragg gratings for single-mode operation",

abstract = "In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs). By periodically etching the surface of a half-cavity VCSEL surface into concentric rings, first-order Bragg gratings are formed in the lateral direction, providing an additional mechanism of optical confinement at the Bragg wavelength. To enable lasing, dielectric DBRs are evaporated on the top. We fabricated the device with a large oxidized aperture size of 11 μm. Experimental results demonstrate the impact of the CBG structure on mode selection and power convergence, with the proposed VCSEL achieving continuous single-mode operation and an output power exceeding 3.7 mW. Dynamic responses show that our device is highly promising for high-speed applications, particularly for transmission distances of up to 10 km.",

author = "Shanting Hu and Xinchen Zhang and Chengyuan Lee and Bo Tian and Lei Zhu and Xiangjun Xin",

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T1 - VCSEL with intra-cavity circular Bragg gratings for single-mode operation

AU - Hu, Shanting

AU - Zhang, Xinchen

AU - Lee, Chengyuan

AU - Tian, Bo

AU - Zhu, Lei

AU - Xin, Xiangjun

PY - 2025/5/1

Y1 - 2025/5/1

N2 - In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs). By periodically etching the surface of a half-cavity VCSEL surface into concentric rings, first-order Bragg gratings are formed in the lateral direction, providing an additional mechanism of optical confinement at the Bragg wavelength. To enable lasing, dielectric DBRs are evaporated on the top. We fabricated the device with a large oxidized aperture size of 11 μm. Experimental results demonstrate the impact of the CBG structure on mode selection and power convergence, with the proposed VCSEL achieving continuous single-mode operation and an output power exceeding 3.7 mW. Dynamic responses show that our device is highly promising for high-speed applications, particularly for transmission distances of up to 10 km.

AB - In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs). By periodically etching the surface of a half-cavity VCSEL surface into concentric rings, first-order Bragg gratings are formed in the lateral direction, providing an additional mechanism of optical confinement at the Bragg wavelength. To enable lasing, dielectric DBRs are evaporated on the top. We fabricated the device with a large oxidized aperture size of 11 μm. Experimental results demonstrate the impact of the CBG structure on mode selection and power convergence, with the proposed VCSEL achieving continuous single-mode operation and an output power exceeding 3.7 mW. Dynamic responses show that our device is highly promising for high-speed applications, particularly for transmission distances of up to 10 km.

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VCSEL with intra-cavity circular Bragg gratings for single-mode operation

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