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808nm 500mW Dot Laser Diode Module (5.6mm Collimated)

SKU: FA3021-8
Module Type

Infrared laser diode module
Output Power

500mW
Wavelength

808nm (near-infrared)
Package

5.6mm TO-18
Beam Type

Collimated dot
Laser Class

Class 3B / 4
Operating Temperature

-10°C to +50°C
Driver Requirement

External constant-current driver

The 808nm 500mW Dot Laser Diode Module is a high-power, collimated infrared laser module designed for professional and industrial applications requiring invisible IR laser output. With 500mW of optical power at 808nm, this module produces a concentrated, collimated dot beam that is ideal for pumping solid-state lasers, medical and therapeutic devices, industrial processing, scientific research, and IR illumination applications.

At the heart of the module is a 500mW 808nm laser diode housed in a standard 5.6mm TO-18 package. The output is collimated using a high-quality glass lens, producing a focused dot beam with low divergence. The 808nm wavelength is in the near-infrared (NIR) spectrum, making the beam invisible or very dim to the human eye — it appears as a faint deep red glow at high power, but laser safety glasses designed for 808nm are mandatory at all times during operation.

The 500mW output power is a significant step above standard laser pointer modules. This power level is suitable for:

  • Solid-state laser pumping — Pumping Nd:YAG and other laser crystals

  • Medical and therapeutic devices — Low-level laser therapy (LLLT), pain relief, and physiotherapy

  • Industrial processing — Marking, engraving, and material processing

  • Scientific research — Spectroscopy, optical trapping, and IR illumination

  • Night vision illumination — IR light source for night vision cameras and systems

  • Defense and security — IR targeting and illumination

The module features a 5.6mm diameter housing compatible with standard laser diode mounts and heatsinks. The collimated output provides a focused dot beam suitable for free-space optical systems and precise aiming. The module requires an external constant-current driver — the laser diode must never be connected directly to a voltage source, as this will instantly destroy the diode. Proper current regulation is essential for stable operation and long lifespan.

The module is widely used in laser pumping systems, medical therapy devices, industrial marking equipment, scientific instrumentation, night vision systems, IR illumination projects, and advanced DIY electronics. It is also popular in research laboratories for optics experiments and laser development.

Important Safety Note: This is a Class 3B/4 laser product (500mW at 808nm). The beam is invisible and highly hazardous to the eyes. Laser safety glasses designed specifically for 808nm are mandatory at all times during operation. Do not stare into the beam or view it directly or with optical instruments. Do not point at people, animals, or reflective surfaces. The beam can cause permanent eye damage and skin burns. Keep out of reach of children. The module should be operated only by trained professionals in controlled environments with proper safety protocols.

Whether you are building a laser pumping system, developing a medical therapy device, or conducting scientific research, the 808nm 500mW Dot Laser Diode Module provides the power and precision you need. It is suitable for engineers, researchers, and businesses purchasing in bulk for professional and industrial applications.

Features

  • 500mW high-power output — Significant optical power for demanding applications

  • 808nm infrared wavelength — Invisible NIR beam for specialized applications

  • Collimated dot beam — Focused output with low divergence

  • 5.6mm TO-18 package — Standard laser diode form factor

  • Glass lens collimation — High-quality optics for precise beam shaping

  • Wide application range — Laser pumping, medical therapy, industrial processing, research

  • Compatible with standard mounts — Fits 5.6mm laser diode heatsinks and mounts

  • High reliability — Industrial-grade laser diode construction

  • Precise beam — Collimated dot for free-space optical systems

  • Professional-grade — Suitable for industrial and research applications

Technical Specifications 

# Parameter Specification
1 Module Type Infrared laser diode module
2 Output Power 500mW
3 Wavelength 808nm (near-infrared)
4 Package 5.6mm TO-18
5 Beam Type Collimated dot
6 Laser Class Class 3B / 4
7 Operating Temperature -10°C to +50°C
8 Driver Requirement External constant-current driver

Usage

Getting Started

  1. Prepare a constant-current driver — The 808nm laser diode must be driven by a constant-current source. Never connect directly to a voltage source. Set the current to the diode’s rated operating current (typically 600–800mA for 500mW output).

  2. Mount the module — Secure the 5.6mm module in a suitable heatsink or laser diode mount. Adequate heat dissipation is essential for stable operation and long lifespan.

  3. Connect the driver — Connect the driver output to the laser diode module leads. Observe correct polarity.

  4. Power on with safety precautions — Wear 808nm laser safety glasses. Apply power and observe the faint IR dot (visible as a dim red glow at high power). Never look directly at the beam.

  5. Adjust focus (if needed) — The collimated output provides a fixed focus. If your module allows focus adjustment, rotate the lens assembly for the desired beam characteristics.

  6. Implement in your project — Use the IR beam for pumping, illumination, or processing in your application.

Electrical Connections

Wire Function
Red Laser diode anode (+)
Black Laser diode cathode (-)

Driver Requirements

Parameter Specification
Driver Type Constant current (linear or buck)
Recommended Current 600–800mA (verify with diode datasheet)
Voltage Compliance Sufficient for diode forward voltage (~2V) + driver overhead

Typical Applications

  • Solid-state laser pumping — Pumping Nd:YAG and other laser crystals

  • Medical therapy — Low-level laser therapy (LLLT), pain relief, physiotherapy

  • Industrial processing — Marking, engraving, material processing

  • Scientific research — Spectroscopy, optical trapping, IR illumination

  • Night vision illumination — IR light source for night vision systems

  • Defense and security — IR targeting and illumination

  • Laser development — Research and development of laser systems

  • Advanced DIY electronics — High-power laser projects

Important Safety Notes

  • Class 3B/4 laser — 500mW at 808nm is extremely hazardous

  • Invisible beam — The beam is invisible; you cannot see it to avoid it

  • Laser safety glasses mandatory — Use 808nm-rated safety glasses at all times

  • Do not stare into the beam — Can cause permanent eye damage

  • Do not point at people or animals — Avoid direct exposure

  • Avoid reflective surfaces — Reflections can be hazardous

  • Keep out of reach of children — Not a toy

  • Trained professionals only — Class 3B/4 lasers require proper safety training

Notes for Business Buyers

  • High-power IR laser — 500mW output for demanding applications.

  • Professional-grade — Suitable for industrial, medical, and research use.

  • Constant-current driver required — Essential for safe and stable operation.

  • Suitable for bulk purchasing — Ideal for medical device manufacturers, industrial laser integrators, and research institutions.

Q: What is the 808nm 500mW Laser Diode Module used for?

It is a high-power infrared laser module used for solid-state laser pumping, medical therapy, industrial processing, scientific research, night vision illumination, and defense applications.

Q: What is the output power and wavelength?

The module outputs 500mW at a wavelength of 808nm (near-infrared).

Q: Is the beam visible?

No. The 808nm wavelength is in the near-infrared spectrum and is invisible or very dim to the human eye. At high power, it may appear as a faint deep red glow, but you cannot see the beam to avoid it. Laser safety glasses are mandatory.

Q: What driver does the module require?

The module requires an external constant-current driver. Never connect it directly to a voltage source — this will instantly destroy the laser diode.

Q: What is the recommended operating current?

The recommended operating current is typically 600–800mA for 500mW output. Verify with the specific diode datasheet for your module.

Q: Does the module need a heatsink?

Yes. Adequate heat dissipation is essential for stable operation and long lifespan. Mount the module in a suitable heatsink or laser diode mount.

Q: What is the package size?

The module uses a standard 5.6mm TO-18 package, compatible with common laser diode mounts and heatsinks.

Q: What safety precautions are required?

This is a Class 3B/4 laser. Laser safety glasses designed for 808nm are mandatory at all times. Do not stare into the beam, avoid pointing at people or animals, and avoid reflective surfaces. Only trained professionals should operate this module.

Q: Is the module waterproof?

No. The module is not waterproof and should be kept dry.

Q: Can I purchase in bulk for a product development project?

Yes. This module is suitable for both individual users and business purchasing, including medical device manufacturers, industrial laser integrators, and research institutions.

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