Temporally Variable Pulse Laser System with Secondary Signal Stabilization

Solution Overview

Problem

Current high-power and high-energy pulse laser systems struggle to modulate the repetition frequency and amplitude of laser pulses without affecting the properties of the amplified pulses, leading to instability and potential component degradation.

Innovation Solution

A temporally modulated pulse laser system that injects both a main signal and a secondary signal into an optical amplifier system, where the secondary signal is modulated in real-time to stabilize the energy stored in the amplifier, allowing for controlled modulation of the amplified pulses without loss and ensuring stability across a wide frequency range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a pulse selector or modulation device is inserted in the optical path to modulate the repetition frequency and amplitude of laser pulses, then the laser pulse emission can be controlled and modulated, but the properties of the amplified pulses are affected and the system becomes complex

Engineering Contradiction:

Improvecontrol of laser pulse emissionVSAvoidsystem complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the pulse selection function and the modulation function into a single integrated device. The device uses a single modulator that can both select pulses and modulate their amplitude, eliminating the need for separate pulse selectors and modulation devices, thus reducing system complexity while maintaining full control capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The modulator device is designed to perform multiple functions simultaneously: it acts as both a pulse selector (choosing which pulses to transmit) and an amplitude modulator (controlling the intensity of selected pulses). This multi-functional approach reduces the number of components needed in the system

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the repetition frequency and amplitude of laser pulses are modulated using conventional methods, then the pulse emission can be varied, but the properties of the amplified pulses are affected leading to instability

Engineering Contradiction:

Improvemodulation capabilityVSAvoidstability of amplified pulse properties

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent performs pulse selection and modulation at the input stage of the amplifier, before amplification occurs. By establishing the desired pulse train characteristics upfront, the amplifier processes only the selected pulses with consistent properties, preventing instability that would arise from modulating already-amplified pulses

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback mechanisms that monitor the properties of amplified pulses and adjust the modulation parameters accordingly. This ensures that the pulse selection and modulation are optimized to maintain stable output properties, compensating for any variations in the amplification process

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If high-power and high-energy pulse laser systems modulate pulses without stabilizing amplifier energy, then frequency and amplitude modulation is achieved, but component degradation and loss occur

Engineering Contradiction:

Improvetemporal modulation capabilityVSAvoidcomponent degradation

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent performs pulse selection and modulation at the input stage of the amplifier, before amplification occurs. By establishing the desired pulse train characteristics upfront, the amplifier processes only the selected pulses with consistent properties, preventing instability that would arise from modulating already-amplified pulses

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback mechanisms that monitor the properties of amplified pulses and adjust the modulation parameters accordingly. This ensures that the pulse selection and modulation are optimized to maintain stable output properties, compensating for any variations in the amplification process

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11108207B2Pulse laser system that is temporally variable in terms of rhythm and/or amplitude

Publication Date: 2021.08.31 AMPLITUDE SYST

AI summary

Disclosed is a laser system including a source, for generating a source signal, and an optical amplifier system. The laser system includes a pulse selection or variation device configured to select or vary the source signal so as to form a main signal composed of one or more light pulses. The main signal is temporally variable in terms of rhythm and/or amplitude. The laser system is configured to inject the main signal and a secondary signal into the optical amplifier system. The secondary signal is varied on the basis of the temporal variation in terms of rhythm and/or amplitude of the main signal so as to stabilize the power stored in the optical amplifier system in a time-dependent manner, and the laser system is configured to spatially separate the amplified main signal from the amplified secondary signal.