Erbium Glass Laser Transmitter

Core eye-safe laser module specially designed for precision ranging and optoelectronic system integration

Absolute Eye-Safety
Ultra-Lightweight & Compact
Superior Beam Quality
Versatile Frequency Options
Extreme Environmental Robustness

Overview

Ultra-Compact 1535nm Eye-Safe Laser Core Solutions

The VL-ELT series consists of high-performance solid-state laser transmitter modules meticulously engineered for eye-safe sensing and ranging applications.

By utilizing Erbium-doped glass as the gain medium, this series emits at a precise 1535nm wavelength. This wavelength is situated within the absolute eye-safe spectral region, permitting safe deployment in public sectors and critical tactical scenarios.

Core Technical Advantages:

Ultra-Lightweight & Compact Design: With module weights as low as 9g to 13g (under 30g for high-frequency models), these units significantly minimize the system payload for UAV gimbals and handheld rangefinders.
Superior Optical Performance: Featuring beam divergence as low as 0.6 mrad and exceptional beam quality (M^2 ≤1.3 ~ ≤1.5), the series ensures high precision and accuracy for long-distance target measurement.
All-Weather Reliability: Engineered to operate stably across a broad temperature range from -40°C to +65°C, these transmitters are built for dependable mission execution in extreme outdoor environments.
High Durability: Offers a long service life with a proven operational capacity exceeding $10^7$ pulses.

Qualification

Core Technical Specifications

Technical Parameters	Specifications	Remarks
Center Wavelength	1535 ± 5 nm	Absolute Eye-Safe Band
Pulse Width (FWHM)	3 ~ 6 ns	High-precision timing
Beam Quality ($M^2$)	≤1.3 to ≤1.5	Depending on model
Working Voltage	< 2 V	LD Electrical Parameter
Working Current	4 A - 18 A	Varies by energy level
LD Pulse Width	≤ 2.5 ms	≤ 0.4 ms for HF models
Operating Temp	-40°C ~ +65°C	Industrial/Military Grade
Storage Temp	-50°C ~ +75°C	Harsh environment endurance
Operational Lifetime	> 10^7 pulses	High reliability
Net Weight	9g ~ 13g	< 30g for HF models

Selection Chart

VL-ELT Series Selection Guide

Model	Pulse Energy (μJ)	Frequency (Hz)	Beam Divergency (mrad)	Primary Application Scenarios
VL-ELT-40-HF	≥ 40	1000	≤ 0.6	High-speed dynamic tracking / LiDAR
VL-ELT-40-LW	≥ 40	1000	≤ 15	Ultra-lightweight high-frequency detection
VL-ELT-100-LR	≥ 100	1~10	≤ 0.6	Long-range precision measurement
VL-ELT-100-S	≥ 100	1~10	≤ 10	Standard handheld rangefinders
VL-ELT-200-S	≥ 200	1~10	≤ 10	Medium-to-long distance ranging
VL-ELT-300-S	≥ 300	1~10	≤ 10	High SNR target identification
VL-ELT-400-P	≥ 400	1~10	≤ 15	Heavy-duty optoelectronic integration
VL-ELT-500-P	≥ 500	1~10	≤ 15	All-weather / Extreme distance ranging