High Power and High Beam Quality VCSEL Amplifier

Ho, Zeuku; Hayakawa, Junichiro; Shimura, Keisuke; Kondo, Keisuke; Gu, Xiaodong; Matsutani, Akihiro; Murakami, A.; Koyama, Fumio

doi:10.1109/islc.2018.8516250

Cited by 7 publications

(12 citation statements)

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“…In recent years, VCSELs have become ideal light sources for fields such as optical communication, optical information storage, 3D sensing, and laser radar [1][2][3][4]. With the rapid development and application of related technologies, such as medium and long-range laser radar and free-space optical communication, higher power requirements have been placed on VCSEL devices [5,6]. By increasing the aperture and the unit density of the 2D integrated array, combined with the optimal design of the p-surface metal electrodes, microstructural etching, and the introduction of an external cavity structure, VCSELs have now achieved power in the order of a few hundred milliwatts to a hundred watts [7,8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of temperature characteristics of high power vertical cavity surface emitting laser arrays

Zhang,

Dai,

Wang

2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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Section: Introductionmentioning

confidence: 99%

Analysis of temperature characteristics of high power vertical cavity surface emitting laser arrays

Zhang,

Dai,

Wang

2023

Fourteenth International Conference on Information Optics and Photonics (CIOP 2023)

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“…Although two-dimensional VCSEL arrays can provide kWclass output power, but there still remains difficulties in their poor beam quality [2]. In our group, we proposed and demonstrated the slow light VCSEL amplifier with high output power over 8W [3]. In the amplifier, an external light source is needed as a seed light.…”

Section: Introductionmentioning

confidence: 99%

Surface grating VCSEL-integrated amplifier/beam scanner with high power and single mode operation

Hassan

et al. 2021

Appl. Phys. Express

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We propose and demonstrate a novel surface-grating vertical cavity surface emitting laser (VCSEL)-integrated amplifier/beam scanner. When the surface of the VCSEL section is periodically etched, a single slow-light mode which travels laterally into the amplifier section is selected due to the wavelength selectivity of the grating. The coupled slow light can be amplified with pumping the amplifier above the threshold. The far field angle of the amplified slow light can be continuously tuned through changing the pumping current at the VCSEL. We fabricated the integrated device with a 400 μm long VCSEL section and 1 mm long amplifier section, realizing in a single mode coupling power of over 7 mW and high output power of over 500 mW under pulsed operations of the amplifier. The continuous fan beam steering of 1.5° and a diffraction-limited narrow beam divergence of 0.06° are also achieved. We also fabricated device with extending the amplifier section length to 2 mm. A high single mode power of 1 W under pulsed operations is achieved, which is the record high power operation for single-mode VCSELs. With the performance of both high power and good beam quality, our new device shows great potential to be used as light source for LiDAR and other sensing applications.

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“…In our group, we demonstrated the slow light VCSEL amplifier with single mode output power of over 8 W and a narrow diffraction-limited divergence beam below 0.03 • [20,21,22]. An input light is coupled through a lensed fiber to a lateral propagation mode with a small group velocity so called "slow light".…”

Section: Introductionmentioning

confidence: 99%

Surface grating loaded VCSEL with single mode power of over 80 mW

Hassan

et al. 2021

IEICE Electron. Express

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We demonstrate a surface grating loaded VCSEL showing high power, good beam quality and stable single mode operation. In the structure, a single slow light mode propagating laterally along the long cavity of an oxide VCSEL can be selected thanks to the surface Bragg-grating. Experimental results of spectrum, L/I characteristics and beam quality with different device lengths are presented. A single mode power of over 80 mW is realized with a narrow diffraction-limited divergence angle of 0.15 • for a VCSEL with an oxide aperture of 4 µm × 500 µm under CW operation. A higher single mode power is expected through extending the device length with the proven scaling law.

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High Power and High Beam Quality VCSEL Amplifier

Cited by 7 publications

References 0 publications

Analysis of temperature characteristics of high power vertical cavity surface emitting laser arrays

Analysis of temperature characteristics of high power vertical cavity surface emitting laser arrays

Surface grating VCSEL-integrated amplifier/beam scanner with high power and single mode operation

Surface grating loaded VCSEL with single mode power of over 80 mW

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