ER902 Miniature Solid-State Laser

• 1535 nm / 1.535 µm SWIR pulsed laser: Emits in the eye-safer infrared wavelength region commonly used for laser rangefinding, LiDAR, remote sensing, target illumination, and compact sensing systems.
• High pulse energy output: Delivers 200 µJ nominal pulse energy, making it suitable for long-distance detection, time-of-flight measurement, and high-sensitivity optical instrumentation.
• High peak power performance: Provides approximately 50 to 75 kW peak power from a compact pulsed laser architecture.
• Short nanosecond pulse width: Produces pulses of approximately 4 ns, ideal for applications requiring precise timing, high spatial resolution, and sharp return signals.
• Flexible repetition rate: Operates from single-shot to 10 Hz, with burst mode available for application-specific pulse sequencing.
• Fast build-up time: Typical build-up time of approximately 2.0 ms supports responsive pulsed operation in compact laser systems.
• Near diffraction-limited beam quality: TEM00 output with beam quality reported as <1.3 diffraction limited for clean spatial mode performance.
• Low beam divergence: Approximate D4σ divergence of 7 mrad, supporting efficient beam delivery for compact rangefinding and sensing platforms.
• Compact, efficient laser module: Requires <6 A pulsed current with 2.0 V compliance, enabling integration into low-voltage, battery-powered, and portable laser systems.
• No standby power required: Designed for efficient pulsed operation without continuous standby power consumption.
• No cooling required: Operates without active cooling, simplifying system design and reducing size, weight, and power requirements.
• Wide operating temperature range: Rated for operation from -40°C to +65°C, suitable for demanding field, aerospace, defense, and outdoor sensing environments.
• Long operational lifetime: Designed for approximately 107 shots, supporting reliable use in industrial and mission-critical applications.
• Stable beam propagation characteristics: Measured D4σ beam diameters include approximately 0.679 mm x 0.587 mm at 78 mm, 1.46 mm x 1.41 mm at 180 mm, 2.24 mm x 2.36 mm at 280 mm, and 2.96 mm x 2.92 mm at 400 mm from the output coupler.
• Application-specific laser design: Well suited for OEM integration into eye-safer laser rangefinders, compact LiDAR transmitters, SWIR sensing instruments, remote detection systems, and pulsed optical test platforms.
• Rugged integration capability: Lead solder tolerance of 320°C for 10 seconds maximum supports careful assembly into compact electro-optical systems.
• Optimized for high-energy nanosecond pulses: Combines 200 µJ pulse energy, 4 ns pulse width, and up to 75 kW peak power in the popular 1.54 µm wavelength band.

Applications for 1.535 µm Eye-Safe Pulsed Laser, 200 µJ, 4 ns, 50–75 kW Peak Power

• Eye-Safe Laser Rangefinding: Ideal for compact laser rangefinders requiring a 1535 nm / 1.54 µm eye-safe wavelength, nanosecond pulse width, high peak power, and reliable single-shot to 10 Hz operation.
• Military and Defense Rangefinders: Suitable for man-portable, vehicle-mounted, naval, and airborne defense rangefinding systems where eye-safe operation, rugged temperature performance, and near diffraction-limited beam quality are required.
• Target Ranging and Fire-Control Systems: Designed for precision distance measurement in fire-control optics, surveillance payloads, weapon sights, and targeting systems operating in demanding outdoor environments.
• UAV and Drone-Based LiDAR: Enables lightweight pulsed LiDAR systems for unmanned aerial vehicles, drones, and autonomous platforms requiring low power consumption, no active cooling, and reliable pulsed operation.
• Robotics and Autonomous Navigation: Well suited for time-of-flight sensing, obstacle detection, terrain mapping, and navigation systems using compact eye-safe pulsed laser sources.
• Short- to Mid-Range LiDAR Mapping: Applicable for 3D LiDAR scanning, topographic mapping, terrain profiling, and object detection where 1535 nm eye-safe laser emission and high peak power improve range performance.
• Range-Gated Imaging: Supports active imaging systems that use short nanosecond laser pulses for night vision, surveillance, obscurant penetration, and long-distance object identification.
• Perimeter Security and Intrusion Detection: Useful in active optical security systems, border monitoring, facility protection, and long-range perimeter surveillance where eye-safe pulsed illumination is essential.
• Atmospheric Sensing and Aerosol LiDAR: Can be used in atmospheric backscatter measurements, aerosol detection, cloud base measurement, and environmental monitoring systems operating near 1.5 µm.
• Wind and Remote Sensing Instrumentation: Suitable as a pulsed laser source for compact remote sensing instruments requiring stable nanosecond pulses and operation over wide temperature ranges.
• Industrial Distance Measurement: Applicable for industrial laser range measurement, positioning, level sensing, and alignment systems requiring high peak power and rugged pulsed laser performance.
• Port, Harbor, and Maritime Ranging: Useful for marine navigation aids, ship-based rangefinding, coastal surveillance, and maritime situational awareness systems using eye-safe 1.535 µm laser pulses.
• Vehicle-Mounted Optical Systems: Designed for integration into land vehicle sensors, remote observation systems, and mobile surveillance platforms operating from -40°C to 65°C.
• Electro-Optical Payloads: Suitable for integration into EO/IR sensor payloads where compact size, low standby power, no cooling requirement, and high peak power pulsed output are important.
• Scientific Time-of-Flight Experiments: Useful for laboratory and field-based time-of-flight measurements, optical timing experiments, and pulsed laser characterization at 1535 nm.
• Optical Test and Measurement: Can serve as a nanosecond pulsed laser source for detector testing, receiver calibration, avalanche photodiode testing, and 1.5 µm optical system validation.
• Free-Space Optical Sensor Development: Supports development of free-space optical ranging, pulsed illumination, and optical receiver systems operating in the near-infrared eye-safe spectral region.
• Training and Simulation Systems: Appropriate for laser-based training, simulation, and instrumentation systems that require controlled pulsed emission at an eye-safer wavelength than 1064 nm.
• OEM Laser Rangefinder Modules: Suitable for OEM integration into compact rangefinder modules, observation devices, handheld instruments, and ruggedized optical assemblies.
• Harsh-Environment Pulsed Laser Systems: The wide operating temperature range, no-cooling design, low standby power, and long lifetime make it suitable for field-deployed sensors in defense, aerospace, industrial, and environmental applications.