H. Ganesha Shanbhogue,
C. L. Nagendra,
M. N. Annapurna,
S. Ajith Kumar,
and G. K. M. Thutupalli
The authors are with the Laboratory for Electro-Optics Systems, Indian Space Research Organisation Satellite Center, A3-6, Peenya Industrial Estate, Bangalore 560 058, India.
H. Ganesha Shanbhogue, C. L. Nagendra, M. N. Annapurna, S. Ajith Kumar, and G. K. M. Thutupalli, "Multilayer antireflection coatings for the visible and near-infrared regions," Appl. Opt. 36, 6339-6351 (1997)
With a high-refractive-index mixed-oxide dielectric material of ZrTiO4 and ZrO2 [Substance H2 (Sub2) from E. Merck, Darmstadt, Germany], in combination with magnesium flouride (MgF2), design optimization and experimental production of low-loss antireflection (AR) coatings are carried out. Design-optimization studies that make use of these materials as constituents of a seven-layer coating system demonstrate that when the useful bandwidth of an AR coating is extended to cover a wider spectral range, the designs are in general found to have increased integrated reflection loss, higher ripple, and increased spectral instability. The experimental studies on Sub2 material show that the films have excellent optical performance over a wider process window, the advantage of which is demonstrated in the production of different AR coatings on a variety of glasses with refractive indices that range from 1.45 to 1.784 and different mechanical, thermal, and chemical properties. The manufacturing process of AR coatings shows a consistency better than 99% with respect to optical properties and durability.
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.