Monolithic Mirror Elements for Disk Laser Alignment Stability
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Solution Overview
Problem
Optical amplifier arrangements, such as disk laser amplifiers, are sensitive to misalignment due to the long beam paths and large number of optical components, leading to potential errors in laser beam deflection and amplification.
Innovation Solution
The use of monolithically joined mirror elements, permanently connected to a base body via a material-fit or direct connection, reduces misalignment degrees of freedom by ensuring precise orientation and stable mounting, with mirror elements formed in one piece or monolithically joined, and oriented at specific angles to facilitate direct deflection and minimize the number of adjustment types required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple separate mirror elements are used to deflect the laser beam through the disk-shaped laser-active medium, then the beam path can be configured to achieve high power amplification, but misalignment errors increase due to the large number of optical components and long beam paths
Solution Approach 1:
Multiple separate mirror elements are merged into a single monolithic mirror element with multiple reflective surfaces. This integration eliminates the need for multiple separate mounting positions and reduces the number of alignment interfaces, thereby maintaining high power amplification capability while significantly improving alignment stability and reducing misalignment errors.
Solution Approach 2:
The monolithic mirror element is designed with multiple distinct reflective surfaces (first mirror surface, second mirror surface, third mirror surface) that perform different beam deflection functions. This segmentation of optical functions within a single integrated component allows the laser beam to undergo multiple passes through the laser-active medium while minimizing the number of separate optical components and their associated alignment errors.
2Adaptability or versatility
If individually adjustable mirrors are used to adapt beam profiles, then beam profile adaptation is achieved, but device complexity increases due to the need for multiple adjustable components and their mounting arrangements
Solution Approach 1:
Multiple individually adjustable mirrors are merged into a single monolithic mirror element with multiple reflective surfaces. This integration maintains the ability to adapt beam profiles through different mirror surfaces while dramatically reducing device complexity by eliminating the need for multiple separate mounting arrangements, adjustment mechanisms, and associated hardware for each individual mirror.
Solution Approach 2:
The monolithic mirror element serves multiple functions simultaneously: it provides beam deflection, beam profile adaptation, and maintains stable orientation for high power amplification. By integrating these multiple functions into a single component, the invention achieves versatile beam control capabilities while reducing the overall device complexity compared to using separate specialized components for each function.
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 minimizes misalignment risks, enhances the stability of the optical arrangement, and allows for precise orientation of mirror elements with high accuracy, reducing the complexity of the beam path and increasing the robustness of the disk laser amplifier.
Implementation Method 1
The mirror elements have mirror faces for deflecting a laser beam and are oriented in such a way that the laser beam is deflected by a respective mirror face via the disk-shaped laser-active medium to another mirror face
Data Source
AI summary
Disclosed are optical arrangements including: a disk-shaped laser-active medium, a deflecting device, having a plurality of mirror elements on which mirror faces for deflecting a laser beam are formed, and having a base body on which the mirror elements are fastened, the mirror faces of the mirror elements being oriented in such a way that the laser beam is deflected by a respective mirror face via the disk-shaped laser-active medium to another mirror face. The mirror elements are formed in one piece or are monolithically joined, and have a connecting section that is formed rotationally symmetrically with respect to a center axis and is rigidly connected by a material-fit connection or a direct connection to the base body.