Moving Laser Focus in Raman Spectrometer
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Solution Overview
Problem
Focusing incident light on a particular area of a sample for a prolonged period can cause undesirable effects such as detonation or deflagration of explosive substances due to heating, which is a limitation in Raman spectroscopy.
Innovation Solution
An apparatus with a beam manipulator using refracting optical components like prisms to deflect the light and focus it at multiple points on the sample, preventing prolonged heating by continuously moving the laser beam, thereby avoiding detonation or deflagration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the laser beam is focused on a particular area of the sample for a prolonged period, then the measurement precision can be improved, but the temperature increases causing detonation or deflagration of explosive substances
Solution Approach 1:
The patent applies the dynamics principle by making the laser beam movable instead of stationary. The beam manipulator continuously moves the focused laser beam to different locations on the sample surface, preventing heat accumulation at any single point while maintaining effective measurement through sequential scanning of multiple locations
Solution Approach 2:
The patent applies segmentation by dividing the sample analysis into multiple discrete locations. Instead of concentrating the laser beam on one continuous spot, the system segments the measurement process across multiple sample locations, with the beam jumping between discrete points to achieve both measurement precision and heat dissipation
2Measurement precision
If the laser beam is focused on a particular area of the sample for a prolonged period, then the measurement precision can be improved, but harmful effects such as detonation or deflagration occur
Solution Approach 1:
The beam manipulator dynamically moves the laser focus across multiple sample locations, preventing the harmful effects of prolonged heating by ensuring no single area is exposed to the concentrated beam for an extended period, thus eliminating detonation or deflagration risks
Solution Approach 2:
The system employs periodic action by repeatedly moving the laser beam between multiple sample locations in a cyclic manner. This periodic scanning ensures that each location receives the laser beam only for a brief, safe duration before the beam moves to the next location, preventing harmful thermal accumulation
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 approach allows for the identification and quantification of substances without causing detonation or deflagration, enabling safe analysis by distributing the light focus over multiple points on the sample.
Implementation Method 1
the beam manipulator may include one or more refracting optical components (e.g., polyhedron prisms) that may deflect the light
Implementation Method 2
a focusing optical component that may collect the deflected incident light and focus the collected deflected incident light at the plurality of points on the sample
Data Source
AI summary
In an embodiment, an apparatus may include a light source, a beam manipulator, an optical component, an analyzer, and a detector. The light source may generate an incident light at a first frequency. The beam manipulator may include one or more polyhedron-shaped prisms that may deflect the incident light for focus at a plurality of points on a sample. The optical component may collect the deflected incident light, focus the collected deflected incident light at the plurality of points on the sample, and collect scattered light from the sample. The scattered light may include elastic scattered light and/or inelastic scattered light. The inelastic scattered light may have a second frequency that is shifted up or down from the first frequency. The detector may detect the inelastic scattered light and the analyzer may identify a substance contained in the sample based on the detected inelastic scattered light.