Terahertz wave observation device
The terahertz wave observation apparatus facilitates direct observation of terahertz waves within a nonlinear crystal by employing excitation, probe, and optional injection light sources, along with prism couplers and imaging, enhancing observation capabilities for practical applications.
JP2026112062APending Publication Date: 2026-07-06NAT UNIV CORP TOKAI NAT HIGHER EDUCATION & RES SYST
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Patent Information
- Application Number
- JP2024227634
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-07-06
AI Technical Summary
Technical Problem
Direct observation of terahertz waves generated inside a nonlinear crystal is difficult due to the complex wavelength conversion process in terahertz wave parametric generation, despite numerical simulations being available.
Method used
A terahertz wave observation apparatus comprising a nonlinear crystal, excitation and probe light sources, prism couplers, and an imaging device to capture detected Stokes light generated by the interaction between probe light and terahertz waves, with optional amplification and injection light for enhanced observation.
Benefits of technology
Enables direct observation of terahertz waves within the nonlinear crystal, allowing for optimization of parameters and system checks for practical applications, using a CMOS camera for imaging.
✦ Generated by Eureka AI based on patent content.
Abstract
This technology provides a way to directly observe terahertz waves generated inside a nonlinear crystal in a terahertz wave parametric generator. [Solution] The terahertz wave observation device 101 comprises a terahertz wave generating nonlinear crystal 1 that generates terahertz waves 3 from excitation light 2 by optical parametric generation, an excitation light source 21 that incidents excitation light 2 onto the terahertz wave generating nonlinear crystal 1, a probe light source 22 that incidents probe light 5 onto the terahertz wave generating nonlinear crystal 1, a first prism coupler 31 for causing the probe light 5 to be incident inside the terahertz wave generating nonlinear crystal 1, and an imaging device 41. The imaging device 41 is characterized by imaging the detected Stokes light 6 generated by the interaction between the probe light 5 and the terahertz waves 3 generated by the terahertz wave generating nonlinear crystal 1.
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