Terahertz spectrum measurement system and method for analyzing a terahertz spectrum of a substance

US11788956B2 · kind B2 · utility

Assignee

• SHANGHAI INSTITUTE OF MICROSYSTEM AND INFORMATION TECHNOLOGY CHINESE ACADEMY OF SCIENCES · CN

Inventors

• Hua Li · Beijing, CN
• Ziping Li · 流花街道, CN
• Wenjian Wan · Shanghai, CN
• Juncheng Cao · Shanghai, CN

Key dates

• Filing date: Sep 30, 2019
• Grant date: Oct 17, 2023
• Expiry date: Jan 22, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S2302/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present application provides a terahertz spectrum measurement system and a method for analyzing a terahertz spectrum of a substance, wherein the terahertz spectrum measurement system comprises: two terahertz quantum cascade lasers with their emission ports arranged oppositely; and a vacuum hood arranged between the emission ports of two terahertz quantum cascade lasers. The terahertz spectrum measurement system and the method for analyzing a terahertz spectrum of a substance realize a separate terahertz dual frequency comb while retaining the advantages of the on-chip dual frequency comb system, which solves the problem that the on-chip dual frequency comb cannot directly measure the terahertz spectra of substances.