Diffraction of a laser beam at the edge of a fractal electrodeposit

Constantin P. Cristescu; Alexandru M. Preda; Ion M. Popescu

doi:10.1117/1.600997

1 June 1996 Diffraction of a laser beam at the edge of a fractal electrodeposit

Constantin P. Cristescu, Alexandru M. Preda, Ion M. Popescu

Author Affiliations +

Optical Engineering, Vol. 35, Issue 6, (June 1996). https://doi.org/10.1117/1.600997

The diffraction of a laser beam while crossing a quasi-twodimensional cell in which a fractal electrodeposition takes place is presented. The features of the diffraction on the fractal edge are dependent on the current intensity through the cell. We observe that the diffractive properties of the fractal change in time after the stopping of the growth process, and totally disappear after a lapse of time of the order 300 s. In the anode zone, the behavior is entirely different. It is characterized by the appearance of high gradients of the refractive index generated by the metal ions created in the anode region. The observed beam divergence is explained using a model based on a curved surface phase optical wedge. The results are tested by analysis of moire´ fringe patterns.

Citation Download Citation

Constantin P. Cristescu, Alexandru M. Preda, and Ion M. Popescu "Diffraction of a laser beam at the edge of a fractal electrodeposit," Optical Engineering 35(6), (1 June 1996). https://doi.org/10.1117/1.600997

Published: 1 June 1996

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE