Investigations of whisper gallery mirrors for extreme ultraviolet (EUV) and soft x-rays

Journal Article · Fri May 01 04:00:00 EDT 1992 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.135280· OSTI ID:7163459

Hung, T Y; Hagelstein, P L ^[1]

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1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Research Labs. of Electronics

The authors have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors in the extreme ultraviolet. Previous work of Vinogradov and co-workers have identified the spectral regime near 100--150 [angstrom] as particularly promising due to the high WGM reflectivities of the noble metals in the vicinity of their Cooper minima in this regime. They confirm this basic result using newer EUV optical data, and they have sought candidate surface materials which would extend the range over which WGMs may be used to longer wavelengths. They find that substantial WGM reflectivities are predicted for a variety of elements in the EUV, and that TE peak reflection is larger than TM peak reflection by on the order of 10%; however, most of the elements which do reflect well have surfaces which are vulnerable to oxygen contamination. Such contamination seriously degrades mirror performance. A cryogenic mirror design using a dynamic solid rare gas surface which has the potential to defeat such surface contamination is described.

• OSTI ID: 7163459
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 28:5; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
COATINGS
ELECTROMAGNETIC RADIATION
ELEMENTS
FLUIDS
GASES
IONIZING RADIATIONS
LASER CAVITIES
LASER MIRRORS
METALS
MIRRORS
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RARE GASES
REFLECTIVE COATINGS
REFLECTIVITY
SOFT X RADIATION
SURFACE PROPERTIES
X RADIATION