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Computer design and fabrication techniques for a wideband dielectric mirror
Applied Optics
|January 15, 2010
Summary
This study introduces a computer-aided design for a 47-layer wideband dielectric mirror, achieving a 6000 cm(-1) bandwidth. The design demonstrates excellent agreement between theoretical calculations and experimental results for reflectance curves.
Area of Science:
- Optics and Photonics
- Materials Science
- Computational Physics
Background:
- Dielectric mirrors are crucial optical components.
- Achieving wide bandwidth in dielectric mirrors presents design challenges.
- Accurate monitoring of layer deposition is essential for fabricating complex optical coatings.
Purpose of the Study:
- To design a 47-layer wideband dielectric mirror using a computer program.
- To develop a computerized prescription for monitoring layer deposition during fabrication.
- To achieve a theoretical mirror bandwidth of 6000 cm(-1) centered at 14400 cm(-1).
Main Methods:
- Utilized a computer program for the design of a multi-layer dielectric mirror.
- Employed a superposition and interleaving method of three different wideband high-reflecting mirror designs.
- Implemented a computerized prescription for in-situ monitoring of layer deposition.
Main Results:
- Designed a 47-layer wideband dielectric mirror with a theoretical bandwidth of 6000 cm(-1) centered at 14400 cm(-1).
- Transmission varied between 0.6% and 2.6%, with a peak transmission of 7.4% at the center wavelength.
- Demonstrated very good agreement between calculated and experimental reflectance curves.
Conclusions:
- The computer-aided design approach is effective for creating wideband dielectric mirrors.
- Computerized monitoring of layer deposition ensures fabrication accuracy.
- The developed design meets theoretical specifications for bandwidth and transmission.
