HQP Series High Peak Power Sub-nanosecond Lasers

RealLight HQP Series High-Power Sub-Nanosecond Laser Product Introduction
RealLight Technology has independently developed the HQP Series High-Power Sub-Nanosecond Laser, targeting LiDAR and precision laser processing industries. The laser adopts a full set of self-developed core optical components including seed laser, optical isolator, pump source and laser amplifier, delivering sub-nanosecond narrow pulse width, high average power and high repetition rate output. Featuring compact lightweight structure, hermetically sealed optical path and air-cooled low-power design, it boasts excellent integration compatibility and serves diverse scenarios such as airborne/mapping LiDAR, micro-nano precision machining, optical detection and ophthalmic medical treatment. Standard versions support 1064nm and 532nm dual wavelengths with pulse width down to 500ps; customized models with 355nm UV wavelength and higher repetition rates are available on request.

1. Integrated Self-Developed Optical Design & Compact Reliable Structure
The HQP Series adopts a self-developed MOPA (Master Oscillator Power Amplifier) architecture with in-house seed source, isolator, pump and amplification chain, realizing low optical loss and stable peak power output. The fully hermetically sealed resonator isolates interference from dust, moisture and temperature fluctuations to prevent optical path drift during long-term continuous operation and extend service life.
Equipped with air cooling instead of water chillers, the laser consumes less than 200W maximum power with low operating energy and fewer auxiliary peripherals. The split layout separates laser head and power supply for compact size and easy installation: laser head dimension 85×91.6×240mm, power supply dimension 172×100×197mm, ideal for space-limited equipment including onboard LiDAR, automated processing machines and miniature medical devices.
Standardized electrical control interfaces support 15VDC power supply, 5V TTL external trigger input, 3V synchronous optical output at 50Ω load, and RS232 serial communication for seamless connection with upper computers, motion control systems and LiDAR timing modules, simplifying system integration.

2. Core Performance Advantages
2.1 Sub-Nanosecond Narrow Pulses for Minimal Thermal Damage in Microfabrication
Minimum pulse width reaches 500ps. Sub-nanosecond ultrafast pulses drastically suppress thermal diffusion, producing clean machining edges free of thermal burn or slag, perfectly suited for precision drilling, internal engraving and micro-nano structuring. For LiDAR and laser ultrasonic measurement, narrow pulses improve ranging resolution and signal-to-noise ratio.

2.2 High Average Power & Wide Repetition Rate Range for Versatile Working Conditions
Three mainstream repetition rate options (5kHz, 20kHz, 50kHz) are provided. The 1064nm version delivers maximum average power of 5W and single pulse energy up to 500μJ; the 532nm green version reaches 2.5W average power and 250μJ single pulse energy. Flexible switching between high and low repetition rates accommodates long-distance LiDAR detection, high-speed continuous marking and rapid engraving.

2.3 High-Quality Fundamental-Mode Beam & Long-Term Output Stability
It emits TEM00 fundamental Gaussian beam with superior beam quality. Full-angle divergence angle at 1/e² in both horizontal and vertical directions is less than 10mrad, and polarization extinction ratio exceeds 100:1 for precise beam control. The power RMS fluctuation remains below 3% over 8 hours of continuous operation, ensuring consistent output during mass production and long-duration LiDAR inspection to boost yield and repeatable detection data.

2.4 Wide Operating Temperature Range & Strong Environmental Adaptability
Standard operating temperature ranges from 15℃ to 35℃, while storage temperature withstands -20℃ to 60℃. It operates stably in vehicle-mounted equipment, outdoor facilities, laboratories and industrial workshops without strict constant temperature & humidity control.

3. Full Technical Parameter Description
The HQP sub-nanosecond laser provides two standard wavelengths: 1064nm infrared and 532nm green, with three repetition rate grades of 5kHz, 20kHz and 50kHz. For 1064nm: 5kHz delivers 2.5W average power and 500μJ single pulse energy; 20kHz delivers 5W average power and 250μJ single pulse energy; 50kHz delivers 4W average power and 80μJ single pulse energy. For 532nm: 5kHz delivers 1.25W average power and 250μJ single pulse energy; 20kHz delivers 2.5W average power and 125μJ single pulse energy; 50kHz delivers 2W average power and 40μJ single pulse energy. Pulse width narrows with higher repetition rates, reaching below 500ps at maximum 50kHz, and power RMS stability stays under 3% for all configurations over 8-hour continuous operation.
All models output TEM00 fundamental mode beams with full-angle divergence angle below 10mrad in horizontal and vertical axes, and polarization extinction ratio over 100:1. Electrically, it operates on 15VDC input, accepts 5V TTL external trigger and outputs 3V synchronous optical signal at 50Ω, with RS232 for system control. Maximum power consumption is less than 200W. Separate dimensions for power supply (172×100×197mm) and laser head (85×91.6×240mm). Operating temperature 15~35℃, storage temperature -20~60℃, air-cooled fully sealed design without water cooling system. Custom 355nm UV wavelength and higher repetition rate variants are available upon request.

4. Diversified Application Fields
4.1 LiDAR & Space Detection
Ideal for laser ranging LiDAR and scanning imaging LiDAR. Sub-nanosecond narrow pulses boost ranging accuracy, while high repetition rates enable continuous high-speed scanning. The compact size supports integration into airborne, vehicle-mounted and survey LiDAR systems. It also applies to laser-induced fluorescence, atmospheric optical detection and laser ultrasonic measurement for remote sensing and optical inspection.

4.2 Precision Laser Processing
Covers fine marking, laser engraving, internal glass/crystal engraving, precision micro-hole drilling and micro-nano machining of various materials. Ultrafast pulses deliver cold processing with ultra-small heat-affected zones, suitable for high-precision micro-structure fabrication on metals, ceramics, glass and polymers. High repetition rate and high average power meet high-speed processing demands of automated production lines.

4.3 Biomedical Applications
Deployed in ophthalmic laser treatment devices, where sub-nanosecond pulses minimize thermal damage to eye tissues and reduce postoperative complications. It also supports biological tissue fluorescence excitation and optical research for medical laboratories.

5. Product Summary
Built on RealLight’s full-chain self-developed optical technology, the HQP Series High-Power Sub-Nanosecond Laser integrates five core strengths: sub-nanosecond narrow pulse width, peak average power up to 5W, maximum repetition rate of 50kHz, air-cooled compact design and hermetically sealed long-term stability. Standard 1064/532nm dual-wavelength options plus customizable 355nm UV version satisfy cross-industry demands including LiDAR detection, industrial precision microfabrication, ophthalmic medical equipment and optical scientific research. Featuring low power consumption, easy integration and wide temperature tolerance, it effectively cuts downstream equipment development and maintenance costs. As a cost-effective domestic sub-nanosecond pulsed laser source, it widely serves automation equipment manufacturers, LiDAR enterprises, university research institutes and medical device producers.