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1535nm Eye-safe Erbium Glass Laser

The ERDI LASER® 1535nm Erbium Glass DPSS Laser Series delivers industry-leading eye-safe solid-state laser solutions for defense, aerospace, LiDAR, industrial metrology, and scientific research applications. Built on our fully in-house developed Er:Yb co-doped phosphate glass bonding crystal technology, the product family offers pulse energies from 10μJ to 10mJ and repetition rates up to 5kHz, covering ultra-compact portable modules weighing as little as 2.5g as well as high-power systems optimized for long-range detection. The series combines exceptional TEM00 beam quality, nanosecond pulse widths, and military-grade reliability across an extended temperature range of -45°C to +65°C, supporting critical applications such as laser ranging, 3D imaging, target designation, and atmospheric monitoring. Available models include the ultra-high-frequency ER10 to ER70 series for high-speed scanning, the compact low-energy MINI-100 to ER900 series for space-constrained embedded systems, and the high-power ER2000 to ER10000 series for long-range surveillance and targeting. All products are certified to IEC 60825-1 Class 1 eye-safe standards, enabling safe operation in personnel-intensive environments. Whether for handheld devices, small UAV payloads, or advanced military platforms, ERDI provides scalable, customizable 1535nm laser sources tailored to the most demanding mission requirements.
Laser Model Comparison Related Insights Applications FAQ Contact
High Frequency Laser Low-energy Laser High-energy Laser

Comparison

Erbium glass lasers (Er:Glass), as the most widely adopted 1535 nm eye-safe laser technology, are categorized by ERDI TECH LTD into three types based on output energy and repetition rate: high-frequency lasers, low-energy lasers, and high-energy lasers. Different applications require different pulse energy levels and repetition frequencies, and customers can refer to the parameter comparison table below to select the most suitable Er:Glass laser for their system.
Feature High Frequency Laser Low-energy Laser High-energy Laser
Models ER10–ER70 MINI100–ER900 ER2000–ER10000
Pulse Energy 10–70μJ 100–900μJ 2–10mJ
Repetition Rate Up to 5kHz Up to 10Hz Up to 5Hz
Size Ultra Compact Compact Larger Format
Best For Fast Scanning Portable Systems Long-Range Detection
Typical Applications LiDAR Rangefinders Surveillance & Targeting

High Frequency Laser

Module ER10 ER20 ER40 ER70
Pulse Energy  ≥10 μJ ≥20 μJ  ≥40 μJ  ≥70 μJ
Laser Pulse Width 5 ns 5 ns 4 ns 4 ns
Drive Pulse Width  ≤ 0.3ms ≤ 0.3 ms  ≤ 0.4ms  ≤ 0.4ms
Pulse Repetition Rate 5KHz 2.5 KHz 1KHz 500Hz
Wavelength 1535nm
Eyesafe Class 1
Pulse Stability 0.1
Directivity <0.2°
Raw Beam Diameter 0 .2 mm
Beam Divergence Angle ＜15 mrad
Beam Mode TEM00
Operating Temperature -45 ℃~+65 ℃
Storage Temperature -55 ℃~+85 ℃
Dimension (mm) 17×8×7
Weight 7 g
Voltage 2 V
Electric current 5 A
Impact 1500 G, 0 . 5 ms
Vibration 20~2000 Hz/20 G
Service life ＞5 million times

Low-energy Laser

Model MINI-100 ER100 ER200 ER300 ER400 ER500 ER800 ER900
Pulse energy ≥100 μJ ≥100 μJ ≥200 μJ ≥300 μJ ≥400 μJ ≥500 μJ ≥800 μJ ≥900 μJ
Laser Pulse width 3.5 ns 6 ns 5 ns 5 ns 6 ns 6 ns 7 ns 7 ns
Drive pulse width ≤ 1ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms 3 ms 3 ms
Pulse repetition rate 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~5Hz
Beam divergence angle ≤ 10 mrad ≤ 8 mrad ≤ 8 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad
Dimension (mm³) 14.5×6.3×4.37 21×8×6.8 25×8×6.8 25×8×6.8 35×8×6.8 35×8×6.8 40×8×7.5 40×8×7.5
Weight 2.5 g 7 g 7 g 8.5 g 12 g 12 g 18 g 18 g
Electric current 12 A 8 A 10A 12A 15 A 15 A 30 A 30 A
Wavelength 1.54 μm
Eye Safe Class 1
Pulse Stability 0.1
Raw Beam Diameter 0.3mm
Beam Mode TEM00
Operating temperature -40 ℃ ~ +65 ℃
Storage temperature -55 ℃ ~+ 85℃
Voltage 2V
Impact Meets MIL-STD-810G test standards (1500 G, 0.5 ms)
Vibration Meets MIL-STD-810G test standards (20~2000 Hz/20 G)
Service life ≥10 million times

High-energy Laser

Model ER2000 ER4000 ER8000 ER10000
Pulse energy ≥ 2 mJ ≥ 4 mJ ≥ 8 mJ ≥ 10 mJ
Laser Pulse width 12 ns 12 ns 10 ns 6 ns
Raw Beam Diameter 0 .5 mm 0 .5 mm 0 .8 mm 0 .8 mm
Dimension (mm³) 60×25×13.5 60×25×13.5 110×40×24 110×40×24
Weight 105 g 105 g 220 g 220 g
Voltage 5 V 5 V 15 V 15 V
Electric current 65 A 65 A 80 A 80 A
Wavelength 1.54 μm
Eyesafe Class 1
Drive Pulse Width ≤ 4ms
Pulse Repetition Rate 1~5Hz
Pulse Stability 0.05
Beam Divergence Angle ≤ 4 mrad
Beam Mode TEM00
Operating Temperature -40 ℃ ~ +65 ℃
Storage Temperature -55 ℃ ~+ 75℃
Impact Meets MIL-STD-810G test standards
Vibration Meets MIL-STD-810G test standards
Service life ≥10 million times

  • High Frequency Laser

  • Low-energy Laser

  • High-energy Laser

Module ER10 ER20 ER40 ER70
Pulse Energy  ≥10 μJ ≥20 μJ  ≥40 μJ  ≥70 μJ
Laser Pulse Width 5 ns 5 ns 4 ns 4 ns
Drive Pulse Width  ≤ 0.3ms ≤ 0.3 ms  ≤ 0.4ms  ≤ 0.4ms
Pulse Repetition Rate 5KHz 2.5 KHz 1KHz 500Hz
Wavelength 1535nm
Eyesafe Class 1
Pulse Stability 0.1
Directivity <0.2°
Raw Beam Diameter 0 .2 mm
Beam Divergence Angle ＜15 mrad
Beam Mode TEM00
Operating Temperature -45 ℃~+65 ℃
Storage Temperature -55 ℃~+85 ℃
Dimension (mm) 17×8×7
Weight 7 g
Voltage 2 V
Electric current 5 A
Impact 1500 G, 0 . 5 ms
Vibration 20~2000 Hz/20 G
Service life ＞5 million times
Model MINI-100 ER100 ER200 ER300 ER400 ER500 ER800 ER900
Pulse energy ≥100 μJ ≥100 μJ ≥200 μJ ≥300 μJ ≥400 μJ ≥500 μJ ≥800 μJ ≥900 μJ
Laser Pulse width 3.5 ns 6 ns 5 ns 5 ns 6 ns 6 ns 7 ns 7 ns
Drive pulse width ≤ 1ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms ≤ 2.4ms 3 ms 3 ms
Pulse repetition rate 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~10Hz 1~5Hz
Beam divergence angle ≤ 10 mrad ≤ 8 mrad ≤ 8 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad ≤ 7 mrad
Dimension (mm³) 14.5×6.3×4.37 21×8×6.8 25×8×6.8 25×8×6.8 35×8×6.8 35×8×6.8 40×8×7.5 40×8×7.5
Weight 2.5 g 7 g 7 g 8.5 g 12 g 12 g 18 g 18 g
Electric current 12 A 8 A 10A 12A 15 A 15 A 30 A 30 A
Wavelength 1.54 μm
Eye Safe Class 1
Pulse Stability 0.1
Raw Beam Diameter 0.3mm
Beam Mode TEM00
Operating temperature -40 ℃ ~ +65 ℃
Storage temperature -55 ℃ ~+ 85℃
Voltage 2V
Impact Meets MIL-STD-810G test standards (1500 G, 0.5 ms)
Vibration Meets MIL-STD-810G test standards (20~2000 Hz/20 G)
Service life ≥10 million times
Model ER2000 ER4000 ER8000 ER10000
Pulse energy ≥ 2 mJ ≥ 4 mJ ≥ 8 mJ ≥ 10 mJ
Laser Pulse width 12 ns 12 ns 10 ns 6 ns
Raw Beam Diameter 0 .5 mm 0 .5 mm 0 .8 mm 0 .8 mm
Dimension (mm³) 60×25×13.5 60×25×13.5 110×40×24 110×40×24
Weight 105 g 105 g 220 g 220 g
Voltage 5 V 5 V 15 V 15 V
Electric current 65 A 65 A 80 A 80 A
Wavelength 1.54 μm
Eyesafe Class 1
Drive Pulse Width ≤ 4ms
Pulse Repetition Rate 1~5Hz
Pulse Stability 0.05
Beam Divergence Angle ≤ 4 mrad
Beam Mode TEM00
Operating Temperature -40 ℃ ~ +65 ℃
Storage Temperature -55 ℃ ~+ 75℃
Impact Meets MIL-STD-810G test standards
Vibration Meets MIL-STD-810G test standards
Service life ≥10 million times

Related Insights

Introduction
The 1535nm erbium glass laser with eye-safe wavelength is a diode-pumped solid-state laser that uses erbium-doped glass (Er) as the gain medium, with an output wavelength of 1535nm.
5 Benefits of 1535nm Erbiun Lasers in Modern Laser Rangefinders
This article explores the top five benefits of using 1535nm Erbium Glass lasers in modern laser rangefinder systems.
Application
In recent years, the 1535nm wavelength laser has emerged in various fields thanks to its eye - safe wavelength.
This article primarily introduces the application of the 1535 nm Erbium Glass laser in LIBS.
Market Outlook
With its dedicated focus on erbium glass laser technology, ERDI TECH LTD is well-positioned to become a leader in innovation within the field of precision instrumentation.
Eye-safe Laser: The Emerging Benchmark in the Laser Rangefinder Market
ERDI TECH is a high-tech enterprise specializing in eye-safe lasers and ranging solutions.

Applications of 1535nm Erbium Glass Lasers

1535nm erbium glass lasers are widely used in applications where eye safety, compact size and reliable ranging performance are critical.

Laser Rangefinders
Erbium glass lasers are the preferred laser transmitter for handheld, vehicle-mounted and airborne laser rangefinders due to their eye-safe wavelength and excellent ranging performance.

LiDAR Systems
High-frequency erbium lasers support obstacle avoidance, navigation, mapping and real-time 3D sensing applications across UAV, robotics and autonomous platforms.

EO/IR Payloads
Compact laser transmitters can be integrated into electro-optical and infrared observation systems for reconnaissance, surveillance and target tracking.

Defense & Security
Military systems rely on erbium glass lasers for target acquisition, fire control, border surveillance and long-range observation applications.

Aerospace & UAV Platforms
Lightweight laser modules are ideal for payload-constrained airborne systems requiring reliable distance measurement and terrain mapping capabilities.

Industrial & Scientific Applications
Erbium lasers are also used in remote sensing, atmospheric monitoring, industrial automation and advanced optical research.

Frequently Asked Questions

What is an erbium glass laser?

An erbium glass laser is a solid-state laser that uses Er:Yb co-doped phosphate glass as the gain medium to generate laser pulses at approximately 1535nm. It is widely used in laser rangefinders, LiDAR systems and electro-optical sensing platforms.

Why is 1535nm considered eye-safe?

Unlike 1064nm lasers, 1535nm laser energy is primarily absorbed by the cornea rather than focused onto the retina. This significantly reduces the risk of retinal damage and allows higher permissible exposure levels under international safety standards.

What is the difference between a 1535nm erbium glass laser and a 1064nm laser?

1535nm erbium glass lasers provide eye-safe operation and are commonly used in laser rangefinders and LiDAR systems. 1064nm lasers generally offer higher pulse energy but require stricter safety controls due to potential retinal hazards.

How do I choose the correct pulse energy?

The required pulse energy depends on target distance, reflectivity, atmospheric conditions and receiver sensitivity. Low-energy models are suitable for compact rangefinders and LiDAR systems, while multi-millijoule models are typically selected for long-range surveillance and defense applications.

Which laser series is best for LiDAR applications?

The High Frequency Laser Series (ER10–ER70) is optimized for high-speed LiDAR and dynamic scanning systems, offering repetition rates up to 5kHz.

Which laser series is best for portable rangefinders?

The Low-energy Laser Series (MINI-100 to ER900) provides the ideal balance between pulse energy, size and power consumption for portable and handheld devices.

Which laser series is designed for long-range detection?

The High-energy Laser Series (ER2000 to ER10000) delivers pulse energies from 2mJ to 10mJ and is designed for long-range ranging, surveillance and aerospace applications.

Can ERDI provide customized laser solutions?

Yes. ERDI offers OEM and ODM customization services, including pulse energy optimization, repetition rate adjustment, optical interface modifications, driver electronics development and mechanical packaging customization.

What industries use erbium glass lasers?

Common industries include defense, aerospace, LiDAR, autonomous systems, robotics, industrial automation, remote sensing and scientific research.

What is the typical lifetime of an erbium glass laser?

ERDI erbium glass laser modules are designed for long-term operation, with typical lifetime performance exceeding 50 million pulses under normal operating conditions.

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