Summary
The phase contrast refractometer converts optical phase differences into intensity differences, and thus the receiver is a photometer. The present design is photoelectric with one phototube and a grey wedge, an electronic device acting as a null indicator. The ratio between the intensities of the two areas to be measured is accurate to 0.3%, corresponding to a difference in optical path in the phase object of 0.0004 λ.
This is a preview of subscription content, log in via an institution to check access.
References
Ingelstam, E., Ark. Fys.6, No. 29 (1953) 287.
Ingelstam, E., Trans. Instr. Meas. Conf., Stockholm1952, 35.
Ingelstam, E. and L. Johansson, Appl. Sci. Res.B4 (1954) 100.
Terman, F. E., Radio Engineers' Handbook, New York 1943.
Apparatus Model 214, Pamphlet No. Ad. 314, Math.-mech. Institut A. Ott, Kempten-Allgäu, Germany.
Waveforms. M.I.T. Radiation Laboratory Series 19, New York 1949, p. 285.
Barrell, H. and J. E. Sears, Phil. Trans., A238 (1940) 1.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Djurle, E. Photoelectric intensity ratio meter as receiver for the phase contrast refractometer. Appl. Sci. Res. 4, 91–99 (1955). https://doi.org/10.1007/BF02316473
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02316473