ER200 1.54μm 200µJ Eye-Safe Erbium Glass Microchip DPSS Laser

TECHNICAL SPECIFICATIONS

OUTLINE DIMENSION

Figure 1 Outline Dimensions(mm)

Operating Instructions

1. 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.
2. 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.
3. 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.
4. 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.

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.