Table of Contents

1. Introduction
2. Principle of Operation
3. Key Components
4. Measurement Parameters
5. YIXIST Solutions
6. References

Introduction

pulsed laser power meters are essential instruments for accurately measuring the power and energy of pulsed lasers. These devices are crucial in applications such as material processing, medical procedures, and scientific research where precise laser control is required.

Principle of Operation

Pulsed laser power meters operate by absorbing the laser pulse energy and converting it into a measurable electrical signal. This process typically involves a thermal sensor or a photodiode that captures the laser energy, which is then processed and displayed.

The absorbed energy results in a temperature increase, which is converted into an electrical signal. The conversion efficiency and response time are critical parameters that determine the meter's accuracy and effectiveness.

Key Components

• Thermal Sensors: These sensors, often made from materials like thermopiles, measure the temperature change caused by laser pulses, providing a direct indication of energy.
• Photodiodes: Used for their fast response times, photodiodes convert laser light directly into an electrical current proportional to the light intensity.
• Digital Displays: This component is crucial for displaying the measured power or energy values for user analysis.
• Calibration Modules: Ensures that the power meter remains accurate over time, typically requiring periodic recalibration against a known standard.

Measurement Parameters

Key parameters for pulsed laser power meters include:

• Wavelength Range: Effective measurement across 350 nm to 1100 nm for visible light applications.
• Energy Range: Capability to measure from 10 nJ to 200 mJ per pulse.
• Repetition Rate: Suitable for lasers operating at up to 2 kHz repetition rates.
• Accuracy: Typically better than ±3% for maximum precision.
• Response Time: Fast response times of around 10 milliseconds to capture rapid pulse changes effectively.

YIXIST Solutions

YIXIST provides advanced solutions for pulsed laser power measurement, offering products that emphasize precision and reliability. Their devices include:

• Model XP-2000: Specific for high-frequency applications, capable of handling repetition rates up to 10 kHz with an energy range of up to 500 mJ.
• Model XP-1000: Ideal for general-purpose use with a broad wavelength range adaptation and rapid response times catering to dynamic laser processes.

References

1. Smith, J. Laser Power and Energy Measurement. Physics Journal, vol. 45, no. 2, 2021.
2. Tanaka, Y. Principles of Laser Measurement Technology. Laser Technology Reports, vol. 12, no. 6, 2020.
3. YIXIST Co., Pulsed Laser Measurement Solutions, YIXIST White Papers, 2023.