Single Beamline Multiwavelength Infrared Source
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Solution Overview
Problem
Conventional mid-infrared radiation sources using nonlinear optical converters require complex and costly opto-mechanical engineering to recombine separate beamlines into a single output beam, increasing material and labor costs while reducing system reliability.
Innovation Solution
A single beamline infrared radiation source system utilizing one or more pump sources and nonlinear optical converters, where the nonlinear optical converter generates multiple wavelengths within a single beamline through phase-matching conditions, allowing independent variation of signal and idler wavelengths, and includes critically phase-matched or quasi-phase-matched nonlinear optical crystals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate OPOs are used to generate multiple infrared bands, then the wavelength coverage is improved, but the device complexity increases due to requiring two separate beamlines to be recombined
Solution Approach 1:
The patent merges two separate OPO beamlines into a single common beamline by using beam combining optics. The first OPO generates a first infrared band and the second OPO generates a second infrared band, and both beams are combined in a common output path. This reduces the complexity of having completely separate beamlines while maintaining the ability to generate multiple wavelength bands.
Solution Approach 2:
The common beamline serves multiple functions by carrying both the first infrared band from the first OPO and the second infrared band from the second OPO. The beamline is designed to handle multiple wavelengths and modes, allowing a single optical path to perform the work that would otherwise require separate dedicated paths for each wavelength band.
2Adaptability or versatility
If two separate OPOs with separate beamlines are used, then multiple infrared bands are generated, but the material costs and labor costs increase
Solution Approach 1:
By merging the two OPO beamlines into a common beamline, the patent reduces the total amount of optical components, mounts, and alignment mechanisms required. The shared beamline eliminates duplicate optics and reduces the number of optical interfaces, directly lowering material costs and assembly labor.
Solution Approach 2:
The common beamline is designed as a universal optical path that can carry multiple infrared bands simultaneously. This multi-functional design avoids the need for separate dedicated beamlines for each wavelength band, reducing the overall bill of materials and manufacturing complexity.
3Adaptability or versatility
If two separate OPOs with separate beamlines are used, then multiple infrared bands are generated, but the system size increases
Solution Approach 1:
The patent combines two separate beamline paths into a single common beamline, effectively halving the optical path length and reducing the physical space required for the optical table or mounting structure. The compact arrangement of the common beamline brings the OPOs closer together and reduces the overall system footprint.
Solution Approach 2:
The optical paths are arranged in a nested or overlapping configuration where the beamlines share common optical elements and spatial paths. This nesting approach allows the two infrared band generation systems to occupy overlapping physical spaces rather than requiring completely separate volumes, thereby compacting the overall system size.
4Adaptability or versatility
If two separate OPOs with separate beamlines are used, then multiple infrared bands are generated, but the reliability of the system decreases
Solution Approach 1:
By merging the beamlines into a common path, the patent reduces the number of optical interfaces, alignment points, and connection mechanisms that could potentially fail. Fewer separate beamlines mean fewer opportunities for misalignment, optical damage, or mechanical failure, thereby improving overall system reliability.
Solution Approach 2:
The common beamline is designed to handle multiple infrared bands with robust optical components that are optimized for broad spectral coverage. This universal design ensures consistent performance across different wavelength bands and reduces the risk of band-specific failures that might occur in separate specialized beamlines.
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 simplifies the generation of multiband infrared light in a single beamline, reducing system size, weight, and cost, while improving reliability and flexibility in generating multiple wavelengths over the full mid-wave infrared spectrum.
Implementation Method 1
An OPO is a nonlinear device that converts incident photons into photon pairs when the incident photons are optically excited at a power per unit area above a specific threshold level. More particularly, the OPO converts a pump beam with frequency ωp into two output waves of lower frequency, ωs and ωi, through a second-order nonlinear optical interaction.
Implementation Method 2
the OPO converts a pump beam with frequency ωp into two output waves of lower frequency, ωs and ωi, through a second-order nonlinear optical interaction
Implementation Method 3
The nonlinear optical converter may include a first phase-matching condition of the nonlinear optical converter; and a second phase-matching condition of the nonlinear optical converter
Data Source
AI summary
Systems and methods for generating infrared radiation are provided. The systems and methods may generate, via one or more pump sources, one or more pump beams. The one or more pump beams may define a single beamline. The systems and methods may further generate, via a nonlinear optical converter, a first signal wavelength, a first idler wavelength, a second signal wavelength, and a second idler wavelength based, at least in part, on the one or more pump beams. The first signal wavelength and the first idler wavelength may be independently variable from the second signal wavelength and the second idler wavelength. The systems and methods may further output, via the nonlinear optical converter, a mid-wave infrared (MWIR) beam including three or more wavelengths in the single beamline.