Development of high efficient focusing optical system for light source of laboratory-based photoemission spectroscopy

2016 Fiscal Year Final Research Report

• Project/Area Number: 26610095
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: Okazaki Kozo 東京大学, 物性研究所, 特任准教授 (40372528)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 光電子分光用光源開発

Outline of Final Research Achievements

The main purpose of this research is development of the focusing optical system for the He Ialpha resonance line of He discharge lamp, which is generally used as a light source for laboratory based photoemission spectroscopy, for realization of higher efficiency in superconducting gap measurements with keeping ultrahigh vacuum of the measurement chamber. By using a Sn filter, we can reduce the intensity of He II resonance line without a diffraction grating with keeping the intensity of He Ialpha resonance line. Whereas the durability performance of the Sn filter had been an issue to be settled, we have beaten the issue by introducing a Sn filter supported by a Ni mesh.

Free Research Field

光電子分光