Thin Lenses and Spherical Mirrors

ON QUALITY OF MAGNETIC TE0nq EIGENMODES OF AN OPEN RESONATOR WITH SPHERICAL MIRRORS

Radio Physics and Radio Astronomy ◽

10.1615/radiophysicsradioastronomy.v1.i4.80 ◽

2010 ◽

Vol 1 (4) ◽

pp. 335-341 ◽

Cited By ~ 1

Author(s):

Yu. V. Svishchov

Keyword(s):

Open Resonator ◽

Spherical Mirrors

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Imaging with three spherical mirrors

Applied Optics ◽

10.1364/ao.39.003216 ◽

2000 ◽

Vol 39 (19) ◽

pp. 3216 ◽

Cited By ~ 13

Author(s):

Joseph M. Howard ◽

Bryan D. Stone

Keyword(s):

Spherical Mirrors

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A New Optical System for Flame Spectroscopy with Special Reference to Thermally Assisted Anti-Stokes Fluorescence Applications

Applied Spectroscopy ◽

10.1366/000370271774370985 ◽

1971 ◽

Vol 25 (1) ◽

pp. 57-60 ◽

Cited By ~ 12

Author(s):

P. Benetti ◽

N. Omenetto ◽

G. Rossi

Keyword(s):

Detection Limits ◽

Total Consumption ◽

Atomic Fluorescence ◽

Flame Emission ◽

Analytical Importance ◽

Primary Focus ◽

Spherical Mirrors ◽

Anti Stokes ◽

Flame Spectrometry ◽

Flame Position

A new optical setup for increasing the intensity of atomic fluorescence flame spectrometry is presented. The arrangement consists of two concave spherical mirrors and an elliposidal mirror whose primary focus is located at the flame position, and secondary at the entrance slit of the monochromator. Approximately 10 times gain in the measured intensities was obtained. The system is also useful for flame emission work, for which about five times gain was observed. With a low background flame such as the air–H2 for the N2−H2 diffusion flame and 400 µ slits, calcium can be detected at the level of 0.005 µg/ml. Moreover, the observed thermally assisted anti-Stokes fluorescence of In and Ga can be of analytical importance since the detection limits with a total consumption burner and the air-H2 flame were found to be 0.015 and 0.02 µg/ml, respectively. Detection limits in atomic fluorescence for Cr, Tl, In, and Fe are also presented.

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