Premium
Laser scanning gradient index optics microscope: submicrometre scale spectroscopy and imaging at cryogenic temperatures
Author(s) -
Vacha M.,
Hashizume K.,
Tani T.
Publication year - 1999
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1046/j.1365-2818.1999.00521.x
Subject(s) - optics , materials science , spectroscopy , microscope , laser , scanning electron microscope , cryostat , microlens , optical microscope , near field scanning optical microscope , lens (geology) , laser scanning , microscopy , vibrational analysis with scanning probe microscopy , resolution (logic) , physics , superconductivity , quantum mechanics , artificial intelligence , computer science
A laser scanning far‐field optical microscope for low‐temperature imaging and spectroscopy based on gradient index optics is presented. A rod‐shaped gradient index microlens is used as a zero‐working‐distance solid immersion objective lens. The obtained lateral resolution is 310 nm of the FWHM at a wavelength of 545 nm. A laser scanning mechanism located outside an optical cryostat enables one to achieve large scanning ranges independent of temperature. The use of the microscope for submicrometre‐scale spectroscopy and low‐temperature photochemistry performed on molecular J aggregates in thin polymer films is presented.