Monolithic Optic Phase Wrapping Laser Pulse Compression
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Solution Overview
Problem
Traditional laser pulse compressors and stretchers are expensive, complex, and impractical for commercial use due to the need for large, precisely aligned optics, which limits the efficiency and cost-effectiveness of ultrafast laser systems, especially for high-power lasers.
Innovation Solution
A single monolithic optic using phase wrapping and binary-phase compression to compress or stretch laser pulses, reducing the need for multiple optics and alignment, and employing a sinusoidal pattern for introducing binary steps to achieve efficient pulse compression or stretching with minimal dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pulse compressors and stretchers are used, then pulse compression or stretching can be achieved, but the system becomes expensive and complex due to the need for large, precisely aligned optics
Solution Approach 1:
The patent combines multiple optical functions (dispersion compensation, pulse compression, and pulse stretching) into a single monolithic optic. This eliminates the need for multiple separate optics and their precise alignment, directly resolving the contradiction between achieving reliable pulse compression and reducing system complexity
Solution Approach 2:
The single monolithic optic is designed to perform multiple functions: it acts as both a pulse compressor and a pulse stretcher depending on its configuration. This multi-functionality reduces the overall system complexity while maintaining the required pulse manipulation performance
2Reliability
If traditional pulse compressors and stretchers are used, then pulse compression or stretching can be achieved, but the system becomes expensive due to the need for large-area optics exceeding 1 m2
Solution Approach 1:
By merging multiple optical functions into a single monolithic optic, the patent eliminates the need for multiple large-area optics. This single optic can be manufactured at a smaller scale, significantly reducing the manufacturing cost while maintaining the required pulse compression performance
Solution Approach 2:
The single monolithic optic design replaces expensive, large-area traditional optics with a more affordable, compact alternative that can be mass-produced, making high-power laser systems more cost-effective
3Reliability
If traditional pulse compressors and stretchers are used, then pulse compression or stretching can be achieved, but the system becomes impractical for commercial use due to the need for precise alignment inside vacuum chambers
Solution Approach 1:
The patent combines multiple optical components into a single monolithic optic, eliminating the need for precise alignment of multiple separate optics. This single component can be easily integrated into commercial laser systems without requiring vacuum chambers or complex alignment procedures
Solution Approach 2:
The single monolithic optic is designed to be self-aligning or easily alignable, eliminating the need for complex alignment procedures and vacuum chambers. This makes the system practical for commercial use while maintaining reliable pulse compression performance
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
The solution enables compact, cost-effective pulse compression or stretching with an energy efficiency of at least 70%, capable of stretching or compressing pulses by at least 100 times, and is suitable for high-power lasers, improving the robustness and affordability of ultrafast laser systems.
Implementation Method 1
an optic uses phase wrapping to compress or stretch a laser pulse
Implementation Method 2
binary-phase compression of stretched laser pulses
Data Source
AI summary
A laser apparatus includes an optic dispersion compensator. In another aspect, an optic (40, 45) uses phase wrapping to compress or stretch a laser pulse. A further aspect includes an apparatus and method for binary-phase compression of stretched laser pulses. In yet another aspect, a single monolithic transmissive or reflective optic (40, 45) provides compression or stretching of a laser pulse using a sinusoidal pattern for introducing binary steps. Another aspect provides a stretching or compressing optic (40, 45) for retarding a phase of multiple frequency regions of a laser pulse by a factor of 2? or less. Still another aspect employs a volume grating or multi-layer mirror including phase wrapping to obtain discontinuous phase jumps in a laser pulse compressor (45) or stretcher (40). Methods of using or making the laser apparatus are also provided.