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Precision Laser Diode
Technology from Dogain-HK

Innovating the future of optoelectronics with high-power laser chips, VCSELs, fiber-coupled modules, and advanced ceramic submounts for global industrial, medical, and scientific applications.

Explore Products Core Technologies

About Dogain Optoelectronic

At Dogain Optoelectronic Technology (H.K.) Co., Ltd., we are a cutting-edge research and development company dedicated to the design, research, and development, as well as the manufacture of laser diode chips and modules in our Mainland China facility.

Our team members bring a wealth of knowledge and expertise to the table, ensuring that we stay at the forefront of laser technology innovation. With years of experience in the field, our laser experts and scientists are dedicated to pushing the boundaries of what is possible in laser technology.

Awarded 2025 China Laser Rising Star Award · Best Semiconductor Laser Technology Innovation Award
Dogain Laser Facility

Core Technologies

Chip Design

  • • NC High Quantum Efficiency
  • • SALOC Low Loss
  • • SP Small Divergence
  • • NA-Suppressed COD

Wafer Growth

  • • SIC Technology
  • • PQA Technology
  • • LDHSC Technology
  • • DS Technology

Chip Fabrication

  • • G3 Technology
  • • IFVD Technology

Packaging

  • • NVS Eutectic
  • • HBF Fiber Coupling

Our Product Portfolio

Engineered for performance, reliability, and precision across diverse industries. Explore our advanced semiconductor laser solutions.

High Power Single Emitter Diode Laser Chip

High Power Single Emitter Diode Laser Chip

  • • High-power, high-efficiency epitaxial structure design
  • • High-quality epitaxial material growth
  • • High-brightness structure design
  • • Special passivation technology on cavity surface
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High Power Single Bar Diode Laser Chip

High Power Single Bar Diode Laser Chip

  • • High-power, high-efficiency epitaxial structure design
  • • High-quality epitaxial material growth
  • • High-brightness structure design
  • • Special passivation technology on cavity surface
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HS Series Single Mode Laser

HS Series Single Mode Laser

Precision single-mode semiconductor laser chips and modules ideal for telecom and sensing applications requiring stable, narrow-linewidth output.

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VCSEL Chip

VCSEL Chip

Vertical-Cavity Surface-Emitting Lasers with high reliability, low threshold current, and excellent beam quality for 3D sensing, LiDAR, and data communications.

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VCSEL Module

VCSEL Module

Integrated VCSEL modules with driver electronics and optics for plug-and-play deployment in facial recognition, AR/VR, and industrial sensing.

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Industrial Fiber Laser Pump Module

Industrial Fiber Laser Pump Module

High-efficiency pump modules designed for industrial fiber lasers, offering robust performance under demanding operating conditions.

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Conduction Cooled Diode Laser Stack

Conduction Cooled Diode Laser Stack

Compact, high-power bar stacks with conduction cooling for integration into solid-state and fiber laser systems.

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Aluminum Nitride (AlN) Submount

Aluminum Nitride (AlN) Submount

High thermal conductivity ceramic submounts for efficient heat dissipation in high-power laser packaging.

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Applications

Our laser technologies power innovation across multiple high-tech industries.

Industry

Telecom

Sensing

Scientific Research

Medical & Aesthetical

100+
Products
20+
Countries
2024
Founded
1
Award in 2025

Frequently Asked Questions

What is a VCSEL?

VCSEL stands for Vertical-Cavity Surface-Emitting Laser. It emits light perpendicular to the top surface, offering advantages in beam quality, low threshold current, and 2D array integration.

Where are your manufacturing facilities located?

Our R&D and headquarters are based in Hong Kong, with manufacturing and production facilities located in Mainland China.

What industries do you serve?

We serve a wide range of industries including industrial manufacturing, telecommunications, sensing (LiDAR, 3D), scientific research, and medical/aesthetic applications.

Do you offer custom laser solutions?

Yes, our team of experts can work with you to develop customized laser chips, modules, and packaging solutions tailored to your specific application requirements.

Get in Touch

For product inquiries, technical support, or partnership opportunities, visit our official website to connect with the Dogain team.

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