Document Type
Thesis
Date of Award
1-31-1987
Degree Name
Master of Science in Electrical Engineering - (M.S.)
Department
Electrical Engineering
First Advisor
Peter Engler
Second Advisor
Edip Niver
Abstract
The feasibility of constructing a feasible transission system to propagate 10.6 microns energy from a CO2 laser is explored. The system is to be used in a clinical surgical setting to deliver as much as 100 watts of CW power from a surgical CO2. laser to a surgical target.
The optimal transmission system is a slender flexible cylindrical structure, 1 mm in diameter and 1.5 m long. The structure should be sufficiently flexible to be bent into a 5 to 10 cm radius without a significant increase in the attenuation constant. For clinical applications the system must be constructed of non-toxic and non-hygroscopic materials.
An overview of hollow cylindrical structures, and solid crystalline and amorphous dielectric structures is presented. Both theoretical and practical considerations are discussed.
An experimental program is initiated to develop a prototype slab waveguide structure. The structure comprises of a glass substrate onto which is vapor deposited a 3 layer, ZnS / ZnSe / ZnS stack. The energy is to propagate in the ZnSe medium and will be confined by the ZnS "cladding". To propagate the power with tolerable efficiency, the ZnSe medium must be at least 200 microns thick. The technical difficulties that were encountered and must be overcome in vapor depositing thick dielectric films are discussed. Once these problems are mastered, the rectangular slab structure can be "folded" in a cylindrical geometry to form an "0"-ring dielectric waveguide.
Recommended Citation
Kim, Jong Min, "The design and fabrication of dielectric waveguides for use with high power carbon dioxide lasers at 10.6 microns" (1987). Theses. 3275.
https://digitalcommons.njit.edu/theses/3275
