Detailed ER200 Specifications
The technical material below is retained for this model only. Do not transfer a range, pulse, interface, mechanical or safety value from another 1535 nm product.
TECHNICAL SPECIFICATIONS
|
Model |
ER200 |
|
Laser Wavelength |
1.54 μm |
|
Eye safe |
Class 1 |
|
Pulse energy |
≥200 μJ |
|
Laser Pulse width |
5 ns |
|
Drive pulse width |
≤2.4 ms |
|
Pulse repetition rate |
1~10Hz |
|
Pulse stability |
10% |
|
Raw Beam Diameter |
0 .3 mm |
|
Beam divergence angle |
≤ 8 mrad |
|
Beam Mode |
TEM00 |
|
Operating temperature |
-40 ℃ ~ +65 ℃ |
|
Storage temperature |
-55 ℃ ~+ 75℃ |
|
Dimension (mm) |
21×8×6.8 mm3 |
|
Weight |
7 g |
|
Voltage |
2 V |
|
Electric current |
10 A |
|
Shock |
1500 G, 0.5 ms |
|
Vibration |
20~2000 Hz/20 G |
|
Lifetime |
＞1million shots |
OUTLINE DIMENSION
Figure 1 Outline Dimensions(mm)
Model-specific conditions and limits
Conditions are retained only when the source states them. They are not reconstructed from a nominal range or wavelength.
Operating Instructions
- Match the laser driver to the ER200 laser.
The laser driver power supply must be properly matched to the laser.
The typical load voltage of the ER200 is < 2 V, with an operating current of 10 A, pulse width < 2 ms, and a repetition rate of 10 Hz. For the exact operating parameters, please refer to the attached factory test report.
The laser driver power supply must meet these requirements; otherwise, the laser may fail to operate properly or could be overloaded and permanently damaged. Therefore, before wiring, carefully check the laser specification sheet and confirm that the laser is compatible with the selected driver. - Always disconnect power before wiring.
Before making any connections, make sure the power is switched off and completely isolated.
When wiring, carefully check the positive and negative terminals of the laser and ensure correct polarity. After the wiring is completed, perform a thorough inspection to confirm that all connections are correct, in order to avoid short circuits, reverse polarity, and other faults. At the same time, make sure all terminals are firmly secured to prevent poor contact due to loose wiring. - Set operating parameters according to the factory test report.
After confirming that the wiring is correct, set the corresponding parameters on the driver according to the attached factory test report.
Once the parameters are correctly set, turn on the driver; the laser should then operate normally. - Keep the laser output window clean.
Take care to keep the laser output window clean and do not touch the window surface.
If contamination occurs, clean the window thoroughly beforeoperating the laser.
1535 nm Pulsed-Source Integration Context
Pulse energy, pulse width, repetition rate, beam divergence, drive waveform, thermal path and the receiving architecture must be assessed together in the finished instrument. The model PDF controls its source values; system range is not inferred from a pulse-energy value, a neighbouring model, or wavelength alone.
Pulse energy describes emitted energy per pulse; its effect cannot be separated from pulse width, divergence, optical losses, receiver threshold and the stated target/atmosphere conditions. It is not a substitute for a model-specific near- or long-range acceptance test.
Source-stated application context
Application labels indicate evaluation context, not automatic fitness for a finished system.
Product Description
ER200 1.54μm / 1535nm 200µJ Eye-Safe Erbium Glass Microchip DPSS Laser
ER200 is a high-energy member of ERDI’s 1535nm eye-safe erbium glass microchip laser family, aimed at OEMs who need a compact, board-level source for long-range LiDAR, laser rangefinding, target designation and even 1.5µm fiber-optic links. Operating at the 1535nm wavelength, it sits inside both the eye-safe band (corneal absorption dominant, lower retinal risk) and the atmospheric transmission window, so it combines safety with low-loss propagation in outdoor paths.
The laser uses a co-doped Er³⁺/Yb³⁺ phosphate glass gain medium pumped by a semiconductor diode, packaged as a microchip DPSS (diode-pumped solid-state) laser. Typical single-pulse energy is ≥ 200µJ with adjustable 1–10Hz repetition rates, giving enough peak power to support 3–8km ranging on standard targets and up to about 15km on extended high-reflectivity targets under good visibility.
Beam quality is one of the ER200’s key strengths: divergence is around 0.3mrad with M² < 1.3, which means a tight, near-diffraction-limited spot at long range. This helps maintain high irradiance on target and a strong echo at the receiver, improving signal-to-noise ratio and measurement reliability in long-distance outdoor scenes. Combined with nanosecond-level pulse width, it is well suited for high-precision time-of-flight ranging and LiDAR point-cloud generation.
For deployment in harsh environments, ER200 is specified to operate across roughly −40°C to +65°C without active TEC temperature control. The microchip structure and robust glass gain medium give good resistance to shock and vibration, and the small, lightweight package can be mounted directly on laser rangefinder or LiDAR driver boards, leaving more room for optics and control electronics.
In typical system architectures, ER200 works as the primary pulse source in 1535nm rangefinder modules, UAV and airborne LiDAR payloads, vehicle or shipborne EO/IR heads, and fixed-site perimeter or mapping systems. The 1535nm wavelength reduces background interference and allows systems to meet eye-safety requirements more easily than 1064nm solutions, while the 200µJ energy level provides the headroom needed for multi-kilometer-class performance.
Confirm short- and long-distance acceptance conditions
- Define minimum distance, target material, reflectance, size and incidence angle.
- Check receiver recovery, optical-axis overlap and strong-return handling at the intended near limit.
- Verify supply tolerance, peak current, grounding, interface levels, connector and timing with the ordered revision.
- For long-distance acceptance, state target geometry, visibility, weather, background and required detection probability.
- Test with the installed window, boresight, field of view, enclosure and thermal path rather than a bare module alone.
- Evaluate accessible emission, labels and failure conditions again for the finished laser product under IEC 60825-1.
Questions to resolve before design release
Does a stated maximum range apply to every target?
No. A stated range must be read with its target and environmental conditions. Dark, small, oblique, wet or partially obscured targets and degraded visibility can reduce received signal.
Does 1535 nm itself establish the laser classification?
No. Classification concerns accessible emission from the finished laser product. The module statement and final instrument assessment are distinct.
Can a long-range claim be used as the minimum range?
No. Minimum-distance behaviour depends on the particular transmit/receive geometry, receiver timing and strong-return management documented for the model and host system.
Product evidence and general technical context
The model PDF controls model claims. Public references below explain general engineering principles only.
- ERDI ER200 model PDFModel-specific technical evidence.
- System Design of a Pulsed Laser RangefinderOptical Engineering 30(3), 1991 - link budget, background, noise, detection and range error.
- The Short-Range, High-Accuracy Compact Pulsed Laser Ranging SystemSensors 22(6), 2146, 2022 - pulsed-ToF equation, timing error, reflectivity and temperature effects.
- Laser system range calculations and the Lambert W functionApplied Optics 48(4), B1-B7, 2009 - range performance versus atmospheric transmission, target and system parameters, and threshold SNR; its 1.06 µm example is general context, not ERDI model data.
- Monostatic all-fiber rangefinder systemApplied Optics 54(25), 7687-7694, 2015 - a measured case study of shared-aperture geometry and receiver-recovery loss; it does not establish an ERDI model limit.
- Light Transmission in Fog: The Influence of Wavelength on the Extinction CoefficientApplied Sciences 9(14), 2843, 2019 - measured and modeled wavelength-dependent fog attenuation.
- IEC 60825-1:2014Laser-product classification and accessible-emission requirements; final equipment requires system-level assessment.
- Practical application of pulsed “eye-safe” microchip laser to laser rangefindersOpto-Electronics Review 21(3), 2013 - a peer-reviewed 1535 nm rangefinder implementation; use for general transmitter/receiver and atmospheric-design context, not model specifications.