Product Overview

🧠 About This Product

905nm Multi-Junction VCSEL emitter chips represent the next generation of high-power density NIR sources. By utilizing a multi-junction (stacked) epitaxial structure, these chips achieve significantly higher slope efficiency and peak power compared to single-junction designs. Our 905nm portfolio offers power levels from 1W up to 70W, specifically engineered for high-performance ranging and LiDAR systems.

At 905nm, the wavelength is strategically chosen for its lower solar background noise and compatibility with automotive-grade LiDAR detectors. The multi-junction technology allows for extremely high output within a tiny footprint (e.g., 70W from a sub-0.5mm die), drastically improving the spatial resolution and detection range of optical systems.

Key differentiators:

• Multi-Junction technology: Stacked active regions for ultra-high power density and superior slope efficiency
• Extreme peak power: Portfolio covers 1W, 4W, 7W, up to 70W for long-range detection
• Optimized for pulse (QCW): Designed for nanosecond-level pulsing, ideal for dToF (Direct Time-of-Flight)
• Ultra-small footprint: High power-to-size ratio, simplifying integration into compact modules
• Superior reliability: Low wavelength drift and high robustness under high-current pulse conditions
• Industrial & automotive ready: Built for demanding environments including robotics and environmental mapping

Project-dependent screening/traceability & compliance documentation available upon request.

💡 Application Scenarios

System performance depends on pulse drive conditions (duty cycle), thermal management, and optical coupling.

• Automotive & Industrial LiDAR
  High peak power of 70W models enables long-range environmental mapping and obstacle detection for AGVs and autonomous systems.
• Laser Rangefinders
  High-precision distance measurement for forestry, construction, and consumer sports optics.
• dToF (Direct Time-of-Flight)
  Nanosecond pulse capability makes these ideal for high-resolution depth mapping in advanced robotics.
• Security & Surveillance
  Long-distance NIR illumination for night vision and high-speed motion capture.
• Drones & UAVs
  Lightweight, high-power sources for altitude hold and terrain following sensors.

Technical Specifications

Note: Parameters characterized under pulse test conditions (PW ≈ 10ns / Duty ≈ 0.01%). Multi-junction chips are optimized for QCW (Pulse) operation.

📊 Electro-Optical Parameters

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Common Specs: Wavelength Temp Coefficient dλ/dT ~0.06 nm/°C • Pulse Width ~10ns • Duty Cycle ~0.01% • Operating Temp -25 to +85°C • Storage -40 to +105°C • RoHS/REACH/HF compliant

Thermal Design: Multi-junction chips generate extreme power density. Efficient heat-sinking and proper pulse duty cycle management are critical. CW operation is NOT recommended for these high-power models.

🌟 Product Advantages

• Multi-junction technology advantage
  Stacked active layers produce 3x to 5x the power of standard single-junction chips at the same current, making it the gold standard for high-power LiDAR.
• Ultra-high power density
  70W from a sub-0.5mm die enables long-range detection and superior spatial resolution in compact modules.
• Optimized for 905nm wavelength
  Lower solar background noise and perfect match with Silicon APD detectors for automotive-grade LiDAR.
• Nanosecond pulse capability
  Designed for dToF (Direct Time-of-Flight) with ultra-fast response for high-resolution depth mapping.

Product Comparison

🔬 905nm Multi-Junction VCSEL vs. Standard VCSEL/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

• Automotive & Industrial LiDAR
  The high peak power of the 70W models enables long-range environmental mapping and obstacle detection for AGVs and autonomous systems. Multi-junction technology provides superior power density for compact LiDAR modules requiring long detection range (>200m) and high spatial resolution.
• Laser Rangefinders
  High-precision distance measurement for forestry, construction, and consumer sports optics. Nanosecond pulse capability enables accurate ranging with minimal power consumption and excellent eye-safety margins.
• dToF (Direct Time-of-Flight)
  Nanosecond pulse capability makes these ideal for high-resolution depth mapping in advanced robotics. Ultra-fast response time enables high-frame-rate 3D imaging for real-time navigation and object recognition.
• Security & Surveillance
  Long-distance NIR illumination for night vision and high-speed motion capture. 905nm wavelength provides covert illumination invisible to human eye while maintaining excellent detector sensitivity.

Secondary Applications

• Drones & UAVs
  Lightweight, high-power sources for altitude hold and terrain following sensors. Compact footprint and high power density enable integration into space-constrained aerial platforms.
• Optical Triggering
  Fast-response source for high-speed industrial synchronization. Nanosecond pulse capability enables precise timing for multi-sensor fusion and high-speed manufacturing processes.
• Medical & Bio-sensing
  Specialized 905nm sources for therapeutic and diagnostic equipment requiring specific penetration depths. Device-level validation required for medical applications.
• R&D / Prototyping Platform
  Wide power range (1W-70W) enables rapid prototyping and platform iteration for emerging LiDAR and ranging applications. Suitable for university research, startup development, and proof-of-concept validation.