940nm Infrared Laser Module 50mW–700mW | CW & TTL Modulation
940nm Infrared Laser Module 50mW–700mW | CW & TTL Modulation
940nm Infrared Semiconductor Laser Module — Precision Near-IR Output
This professional-grade 940nm infrared semiconductor laser module delivers stable, narrow-beam near-infrared output ideal for research, sensing, alignment, machine vision, and industrial OEM integration. Available in multiple output power configurations from 50mW up to 700mW (and extended variants at 960nm / 500mW), it combines TEC temperature stabilization with low-divergence optics for repeatable, long-term performance.
Key Features
- Wavelength: 940nm ±5nm (also available at 960nm)
- Output Power Options: 50mW / 200mW / 300mW / 700mW (960nm: 500mW)
- Operating Mode: Continuous Wave (CW) or Modulation (Analog / TTL up to 30kHz)
- Spatial Mode: Multimode
- Beam Divergence (full angle): 2.5 mrad
- Beam Diameter (1/e²): 6 mm
- Beam Height: 25 mm
- Pointing Stability: <0.05 mrad
- Power Stability: ±3% over 2 hours
- Temperature Control: TEC (Thermoelectric Cooling)
- Warm-Up Time: <2 minutes
- Service Life (MTTF): 10,000 hours
- Laser Head Dimensions: 100(L) × 40(W) × 50(H) mm³
- Input Voltage: 12V DC (AC/DC PSU: 85–265V, 50/60Hz)
- Certifications: CE, EMC
Power Supply Options
Three power supply configurations are available to match your application:
- OEM Type (LSR-PS-I): 100(L) × 58(W) × 32(H) mm³ — compact for system integration
- Lab Type (LSR-PS-IIS): 104(W) × 128(D) × 89(H) mm³ — benchtop-ready
- Lab Adjustable Type (LSR-PS-IIS): 179(W) × 148(D) × 56(H) mm³ — variable output for R&D environments
All PSU variants accept 85–265V AC input at 50/60Hz, making them globally compatible.
Ideal Applications
- Scientific research & spectroscopy
- Machine vision & industrial sensing
- Night vision illumination
- Optical alignment & testing
- OEM system integration
- Laser-based instrumentation
Technical Specifications at a Glance
| Parameter | Value |
|---|---|
| Wavelength | 940nm ±5nm / 960nm |
| Output Power | 50mW, 200mW, 300mW, 700mW (960nm: 500mW) |
| Modulation Frequency | 0–30kHz (Analog or TTL) |
| Beam Divergence | 2.5 mrad (full angle) |
| Pointing Stability | <0.05 mrad |
| Power Stability | ±3% / 2 hours |
| MTTF | 10,000 hours |
| Operating Voltage | 12V DC |
| Certifications | CE, EMC |
Made in Mainland China.
⚠️ Laser Safety Notice: This is a high-power infrared laser module. Infrared beams are invisible to the naked eye. Always follow proper laser safety protocols, use appropriate IR-rated laser safety eyewear, and comply with local regulations. For guidance on laser safety standards, refer to OSHA Laser Hazards.
Frequently Asked Questions
Q: What wavelengths are available for this infrared semiconductor laser module?
A: This laser module is primarily available at 940nm (±5nm tolerance). An extended variant at 960nm with 500mW output is also offered. Multiple output powers are available at 940nm: 50mW, 200mW, 300mW, and 700mW — please select your desired configuration at checkout or contact us to confirm availability.
Q: Can this 940nm laser module be modulated for pulsed applications?
A: Yes. The module supports both Continuous Wave (CW) operation and modulation modes. Modulation is compatible with Analog or TTL signals at frequencies from 0 to 30kHz, making it suitable for time-gated sensing, ranging, and synchronization with external instrumentation.
Q: What power supply do I need, and is it included?
A: A matching AC/DC power supply unit (PSU) is available in three form factors: a compact OEM type for system integration, a standard lab type, and an adjustable lab type for R&D use. All accept universal AC input (85–265V, 50/60Hz). Please specify your preferred PSU type when ordering, as availability may vary by configuration.
Q: How is the laser module kept thermally stable during operation?
A: The module integrates a TEC (Thermoelectric Cooler) for precise temperature stabilization. This ensures a power stability of ±3% over a 2-hour operating window and a warm-up time of under 2 minutes, providing consistent, repeatable output across extended use sessions.