Synchrotron infrared nanospectroscopy in fourth-generation storage rings

Author(s)

Santos, Thiago M. ; Lordano, Sergio ; Mayer, Rafael A. ; Volpe, Lucas ; Rodrigues, Gustavo M. ; Meyer, Bernd ; Westfahl, Harry, Jr. ; Freitas, Raul O.

• Document type: Journal article
• Source: JOURNAL OF SYNCHROTRON RADIATION; v. 31, p. 10-pg., 2024-05-01.

Abstract

Fourth-generation synchrotron storage rings represent a significant milestone in synchrotron technology, offering outstandingly bright and tightly focused X-ray beams for a wide range of scientific applications. However, due to their inherently tight magnetic lattices, these storage rings have posed critical challenges for accessing lower-energy radiation, such as infrared (IR) and THz. Here the first-ever IR beamline to be installed and to operate at a fourth-generation synchrotron storage ring is introduced. This work encompasses several notable advancements, including a thorough examination of the new IR source at Sirius, a detailed description of the radiation extraction scheme, and the successful validation of our optical concept through both measurements and simulations. This optimal optical setup has enabled us to achieve an exceptionally wide frequency range for our nanospectroscopy experiments. Through the utilization of synchrotron IR nanospectroscopy on biological and hard matter samples, the practicality and effectiveness of this beamline has been successfully demonstrated. The advantages of fourth-generation synchrotron IR sources, which can now operate with unparalleled stability as a result of the stringent requirements for producing low-emittance X-rays, are emphasized. (AU)

• FAPESP's process: 19/14017-9 - From excitons waves to THz-phonons: 2Ds materials nano-optics via synchrotron infrared nanospectroscopy
• Grantee: Raul de Oliveira Freitas
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 21/10487-0 - Multi-user equipment approved in grant 2019/14017-9: mid-IR-VIS illumination units for synchrotron s-SNOM
• Grantee: Raul de Oliveira Freitas
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 20/15740-3 - Nanophotonics of low-dimensional semiconductor oxides in the infrared and terahertz regimes
• Grantee: Rafael Alves Mayer
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 22/11987-0 - Multi-user equipment approved in grant 2019/14017-9: custom s-SNOM nanoscope optimized for operation with IR-THZ synchrotron
• Grantee: Raul de Oliveira Freitas
• Support Opportunities: Multi-user Equipment Program