Dual-Resonance Laser Layout for High-Power Optical Modulation
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Solution Overview
Problem
Existing laser devices with optical modulation elements in resonance cavities face limitations due to the low damage thresholds of these elements, which restrict the output power and require reduced laser power operation.
Innovation Solution
The laser device employs multiple resonance cavities, including a first resonance cavity for generating a pulsed laser using an optical switch unit and a second resonance cavity for controlling the output optical field with an optical modulation unit, allowing for high power laser output without damaging the optical modulation element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical modulation elements are incorporated into resonance cavities to achieve direct modulation and real-time control, then laser mode control capability is improved, but output power is limited due to low damage thresholds of the modulation elements
Solution Approach 1:
The patent divides the laser system into multiple resonance cavities (first resonance cavity and second resonance cavity), each with its own optical modulation element. This segmentation allows independent optimization of each cavity - one can operate at high power while the other provides modulation, resolving the contradiction between output power and modulation capability.
Solution Approach 2:
The patent introduces an optical coupling mechanism between the two resonance cavities, where one cavity acts as an intermediary to transfer energy or control signals to the other. This allows the system to achieve both high power output and precise modulation without directly exposing the modulation element to full power levels.
2Reliability
If laser power is reduced to protect optical modulation elements from damage, then reliability of the modulation elements is improved, but productivity and output power of the laser device deteriorate
Solution Approach 1:
By segmenting the laser into multiple cavities, the system can distribute the power load and protection functions across different components. One cavity can be optimized for high power operation while another handles modulation at lower intensities, maintaining both reliability and productivity.
Solution Approach 2:
The patent designs the optical path and coupling mechanisms to inherently protect modulation elements from excessive power exposure before damage can occur. This includes strategic placement of modulation elements in specific cavities and using optical coupling to buffer power levels, providing beforehand protection while maintaining high overall system output.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables the laser device to output high power or pulsed lasers while protecting the optical modulation element, maintaining direct modulation of laser modes and real-time control.
Implementation Method 1
an energy supply unit, a beam splitting unit, reflection units, an optical switch unit and an optical modulation unit. The energy supply unit is used to generate an initial light beam
Implementation Method 2
The reflection units are respectively disposed on propagation paths of the input light beams to form resonance cavities, where the propagation paths include a first propagation path of the first input light beam and a second propagation path of the second input light beam. The resonance cavities include a first resonance cavity and a second resonance cavity, where the first resonance cavity is disposed on the first propagation path of the first input light beam and is used to reflect the first input light beam back and forth
Implementation Method 3
The optical switch unit is disposed in the first resonance cavity and is disposed on the first propagation path of the first input light beam to transform the first input light beam into a pulsed laser
Implementation Method 4
The optical modulation unit is disposed in the second resonance cavity and is disposed on the second propagation path of the second input light beam to control an output optical field of the second input light beam
Data Source
AI summary
A laser device includes an energy supply unit used to generate an initial light beam, a beam splitting unit, reflection units, an optical switch unit and an optical modulation unit. The beam splitting unit split the initial light beam into a first input light beam and a second input light beam. The reflection units are respectively disposed on propagation paths of the first input light beam and the second input light beam to form a first resonance cavity and a second resonance cavity, where the first resonance cavity and the second resonance cavity are respectively used to reflect the first input light beam and the second input light beam back and forth. The optical switch unit transforms the first input light beam into a pulsed laser. The optical modulation unit controls an output optical field of the first input light beam and the second input light beam.