1535nm 200uJ Er:Glass Laser Module for Rangefinding | Wumi Technology
Wumi Technology (Qingdao) Co., Ltd. has released the technical datasheet for a 1535nm 200uJ Er:Glass pulsed solid-state laser module designed for laser rangefinding, LiDAR, remote sensing, security monitoring, smart city sensing, and compact optoelectronic integration.
The product is positioned as a compact laser source for systems that require a 1535nm eye-safe wavelength range, short pulse width, stable pulse energy, and reliable operation across a wide temperature range. It is suitable for OEM projects where the laser source must fit into a small optical or electro-optical platform.

Why 1535nm Matters for Rangefinding Systems
For laser rangefinder module design, wavelength selection directly affects system safety, detector matching, optical design, and field performance. The 1535nm band is widely used in eye-safe rangefinding and sensing applications because it sits in a wavelength region that is more suitable for systems where human-eye exposure risk must be carefully controlled.
This does not mean the laser beam should be viewed directly. During integration, testing, and operation, users should still follow laser safety procedures and avoid direct exposure to the beam.
Key Specifications
The 1535nm Er:Glass laser module uses a semiconductor laser as the pump source and Er:Glass bonded crystal as the gain medium. It is designed for compact structure, convenient integration, and reliable pulsed output.
Main specifications include:
- Wavelength: 1535 ± 2nm
- Pulse energy: 200uJ typical, 300uJ maximum
- Pulse width: 4.5ns typical
- Repetition rate: 1-10Hz
- Divergence angle: 10mrad typical
- Operating temperature: -40°C to +60°C
- Storage temperature: -40°C to +70°C
These specifications make the module a practical option for engineering teams developing compact rangefinding systems, optical sensing terminals, and LiDAR-related equipment.

Application Areas
The 1535nm 200uJ laser module can be evaluated for:

- Laser rangefinder modules
- LiDAR and optical sensing systems
- Remote sensing range measurement
- Security monitoring and perimeter sensing
- Smart city sensing terminals
- Compact optoelectronic detection platforms
- OEM laser source integration
For OEM laser rangefinder module projects, key evaluation factors normally include pulse energy, beam divergence, pulse width, repetition rate, operating temperature, power supply design, package size, and long-term reliability. Wumi Technology can support project discussion based on integration requirements and target system specifications.
Mechanical Dimensions and Pin Definition
The original technical specification includes a compact mechanical drawing and pin definition. Pin definition: 1 – LD (+), 2 – LD (-). Final installation and power connection should follow the confirmed engineering drawing and project documentation.

Handling and Integration Notes
The laser emits at 1535nm, which is within the eye-safe wavelength range. Direct viewing of the beam is still not recommended. Improper use may cause irreversible eye injury.
Electrostatic discharge or surge current may damage the laser, cause P-N junction breakdown, or reduce long-term reliability. ESD protection should be used during transportation, storage, assembly, and operation. Power supplies, computing instruments, and related equipment should be properly grounded.
Before power-on, verify correct polarity and make sure there is no reverse connection. Do not plug or unplug the laser circuit while powered.
Datasheet Download
The English technical datasheet is available for engineering review and product selection.
Download: 1535nm 200uJ Er:Glass Pulsed Solid-State Laser Datasheet (PDF)
For product parameters, mechanical dimensions, integration requirements, or project discussion, please contact Wumi Technology through the official website.
Contact Information
Company: Wumi Technology (Qingdao) Co., Ltd.
Address: No. 713-1 Xiangjiang Road, Huangdao District, Qingdao, Shandong, China
Tel: 15865597117
Email: support@wmkjqd.com
Website: https://www.wmkjqd.com/contact/



