Discover the 940nm Solid Beam Profile VCSEL Chips

🧠 About This Product

Our 940nm VCSEL array chip provides high-power near-infrared emission with a filled, near-circular far-field profile (see datasheet far-field profile), designed for active NIR illumination in sensing/perception modules, industrial vision, and biometric systems. The 3W (HEV9403W) configuration offers narrow spectral width (2nm RMS typical) and slope efficiency up to 1.0 W/A (typ), characterized under QCW operation at 50°C heatsink temperature.

The 940nm wavelength is invisible to the human eye and is widely used for active illumination in sensing systems. Final illumination uniformity and irradiance distribution depend on optical design (distance, lens/diffuser/homogenizer, window/aperture) and system drive conditions.

Key differentiators: Performance characterized under QCW operation at 50°C heatsink temperature. Power conversion efficiency up to 47% (typ). Threshold current down to 0.3A (min). Specifications are Preliminary and subject to final datasheet limits. Project-dependent screening/traceability and compliance documentation can be provided upon request, subject to project requirements and agreement.

💡 Application Scenarios

System performance and application results depend on device design, optical configuration, drive conditions, safety controls, and regulatory compliance (where applicable).

• Active NIR Illumination for Sensing/Perception Modules
  ToF/3D sensing, structured light/active stereo assistance, depth cameras, proximity/gesture sensing. 940nm is commonly used for "invisible" active illumination; final performance depends on system optics and eye-safety design (window/diffuser/projection optics/distance, etc.).
• Biometrics & Access Control Illumination
  Facial recognition supplementary lighting, liveness detection auxiliary illumination, security terminals/smart locks/gates, etc. (subject to system integration and validation).
• Industrial Sensing & Machine Vision Illumination
  Industrial inspection supplementary lighting, reflective sensing, through-beam/diffuse-reflective detection, position detection/counting, production line monitoring, etc. Final uniformity and intensity depend on optical design (distance, optics, diffuser/homogenizer).
• Short-Range Ranging / Obstacle Avoidance Modules
  Active illumination source for short-range ranging/obstacle detection modules. System-level optics and eye-safety assessment are required.
• NIR Spectroscopy / Material Detection & Imaging Illumination (System Dependent)
  Used as a wavelength-specific illumination source near 940nm; suitability depends on material absorption characteristics and system SNR budget. For imaging illumination, device-level verification and compliance pathway apply (where applicable).

Technical Specifications

Note: All specifications are Preliminary and subject to final datasheet limits. Test conditions: QCW operation, heatsink temperature 50°C. Values shown as Min/Typ/Max or Min/Typ where applicable.

📊 Electro-Optical Parameters

📐 Physical & Structural Parameters

🌟 Product Advantages

• 940nm "invisible" NIR emission
  Commonly used for active illumination in sensing and perception modules.
• Filled, near-circular far-field profile
  May simplify illumination optics depending on system configuration.
• High slope efficiency
  Up to 1.0 W/A (typ) supports efficient driver and thermal budgeting.
• Narrow spectral width
  2nm RMS (typ) supports optical filtering and multi-sensor design considerations.
• Compact die footprint
  944 × 941 µm supports compact module integration.
• QCW-characterized performance
  Characterized at 50°C heatsink temperature under QCW operation.

Product Comparison

🔬 940nm VCSEL vs. LED/EEL

Note: Indicative typical values only. Performance varies by supplier, package, optics, and test conditions. For reference only and not a specification commitment.

Frequently Asked Questions

❓ FAQ

📋 Detailed Application Scenarios

Primary Applications

• Active NIR Illumination for Sensing/Perception Modules
  ToF/3D sensing, structured light/active stereo vision, depth cameras, proximity/gesture sensing. Suitable for developing controlled, repeatable NIR output subsystems where the complete device handles optical design (collimation/beam expansion/homogenization), thermal management, and safety controls.
• Biometrics & Access Control Perception
  Facial recognition supplementary lighting, liveness detection auxiliary illumination, security terminals/smart locks/gates. Integration into professional biometric device platforms where system-level performance is validated by the device manufacturer.
• Industrial Sensing & Machine Vision Illumination
  Industrial inspection supplementary lighting, reflective sensing, through-beam/diffuse-reflective detection, position detection/counting, production line monitoring. Suitable for compact illumination source modules where final uniformity and intensity depend on optical design (distance, optics, diffuser/homogenizer).
• Short-Range Ranging/Obstacle Avoidance Modules
  940nm narrow-spectrum NIR illumination source for short-range LiDAR-like modules, obstacle detection, and autonomous navigation systems. System design requires appropriate scanning/projection methods and eye safety assessment.

Secondary Applications

• NIR Spectroscopy/Material Detection
  Used as a specific wavelength illumination source near 940nm for material identification, moisture detection, and composition analysis. Suitability depends on the absorption characteristics of the material being measured and system SNR budget.
• Medical/Research Imaging NIR Illumination
  Near-infrared imaging auxiliary illumination for medical and research applications. Still at the "light source device" level, requiring complete machine verification and compliance pathway (where applicable).
• Modular Light Engine Platform
  Standardized 940nm light source engine suitable for multi-model platform sharing. Different models achieve different spot sizes and output characteristics by changing optical components while using the same core light source module.
• Custom Wavelength/Binning/Divergence/Layout
  Customization for specific coupling structures (fiber coupling, light guides, projection optics) or specific system windows (temperature/size/packaging). Custom parameter and array layout design available on project basis.

What is a Solid Beam Profile?

The term 'Solid Beam Profile' refers to a laser beam that maintains a consistent intensity across its diameter. This characteristic is crucial in various applications, as it results in a high-quality output that is easy to focus and control. Our 940nm Solid Beam Profile VCSEL Chips excel in providing a uniformly distributed beam, making them suitable for numerous optical applications. These chips are designed specifically for reliable performance and energy efficiency, therefore, they become an ideal choice for precision applications in industries like medical, automotive, and consumer electronics.

Benefits of Our VCSEL Technology

Choosing our 940nm VCSEL technology brings several advantages. First, they provide high-speed data transfer capabilities, which is essential for modern communication systems. Second, these chips have excellent thermal stability, allowing them to operate effectively in challenging environments. Additionally, our VCSEL chips are designed for low power consumption, which helps reduce operational costs. Because they maintain a solid beam profile, they offer enhanced focusing capabilities, ensuring that the emitted light is utilized optimally in various uses.

Applications of 940nm VCSEL Chips

The applications for our 940nm Solid Beam Profile VCSEL Chips are vast and varied. They are used in laser scanning, biometrics, and optical communications because of their efficient and stable output. Moreover, the solid beam profile is especially beneficial in medical devices that require precise laser applications, such as surgical lasers and diagnostic equipment. As industries continue to evolve towards more advanced optical requirements, our VCSEL chips are positioned to meet future challenges effectively, ensuring quality and reliability in all applications.