Quantum Beam Shaping Structure for Low-Displacement Laser Profiles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing beam shaping techniques for laser beams in quantum information processing systems, such as those using cylindrical lenses or anamorphic prism pairs, suffer from alignment issues and beam displacement effects, leading to astigmatism and increased beam size, which are costly to address.
Innovation Solution
A beam shaping structure comprising a housing with prisms and mirrors arranged at specific angles to reshape laser beams, minimizing beam displacement and alignment sensitivity, allowing for flexible adjustment of aspect ratios without disrupting the optomechanical design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If cylindrical lenses are used to circularize beam profiles, then beam shaping is achieved, but alignment complexity and astigmatism increase
Solution Approach 1:
The patent replaces the mechanical alignment system of cylindrical lenses with an optical system using prisms and mirrors. The prism pair with perpendicular bases transforms the beam profile through optical refraction rather than mechanical lens positioning, eliminating the need for precise spacing and rotational alignment while achieving the same circularization effect.
Solution Approach 2:
The patent introduces mirrors as intermediary elements between the prisms to redirect the beam path. This allows the prisms to be positioned at fixed angles without requiring precise alignment of the entire optical train, as the mirrors compensate for positional variations and maintain the beam shaping function.
2Shape
If cylindrical lenses are used to reshape beams, then beam profile is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses prisms and mirrors which can be manufactured with standard optical precision tolerances rather than the high-precision cylindrical lenses required for beam shaping. These optical elements are more readily available and less costly to manufacture while achieving the same beam profile transformation function.
3Shape
If anamorphic prism pairs are used to shape beams, then beam aspect ratio is controlled, but beam displacement increases
Solution Approach 1:
The patent uses prisms with perpendicular bases creating an asymmetric optical path that transforms the beam aspect ratio. The specific geometric configuration of the prisms with 90-degree angles between bases provides controlled asymmetric refraction that changes beam dimensions without the lateral displacement associated with conventional anamorphic prism pairs.
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 proposed beam shaping structure efficiently reshapes laser beams to desired aspect ratios with minimal displacement, enhancing the performance of quantum information processing systems by reducing alignment requirements and maintaining beam direction consistency.
Implementation Method 1
a first prism arranged in the housing to receive the laser beam
Implementation Method 2
a mirror arranged in the housing to reflect the laser beam after it passes through the first prism
Data Source
AI summary
Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, to implementation of beam shaping structures to the QIP systems. Beam shaping structures can include a first prism, a mirror, and second prism arranged at distance from one another and configured to receive and reflect a laser beam to shape the beam upon exit from the structure. Such beam shaping structures provide flexibility to the QIP system by permitting easy exchange of optical elements in order to achieve different laser beam spot aspect ratios.