Abstract

A new gradient-index lens with high numerical aperture has been fabricated by a new ion-exchange tech­nique. In this treatment, a glass rod doped with a highly polarizable ion (dopant A) is immersed into KNO₃ salt doped with a medium polarizability ion (dopant B). Dopant B penetrates into the rod and modifies the refractive-index profile of the lens. This new lens has 0.6 N.A. and gives a 1.18-μm spot diam in the light-focusing system. This lens gives good results also in a light source coupling system and is useful in microoptic devices.

© 1983 Optical Society of America

Gradient-index rod lens made by a double ion-exchange process

S. Ohmi, H. Sakai, Y. Asahara, S. Nakayama, Y. Yoneda, and T. Izumitani
Appl. Opt. 27(3) 496-499 (1988)

Gradient-index rod lens with a high acceptance angle for color use by Na⁺ for Li⁺ exchange

Kiyosumi Fujii, Syuya Ogi, and Noboru Akazawa
Appl. Opt. 33(34) 8087-8093 (1994)

Numerical analysis of low chromatic aberration of a gradient refractive index rod lens

Hao Lv, Aimei Liu, Xunong Yi, and Qianguang Li
Appl. Opt. 48(3) 584-590 (2009)

Gradient-index slab lens with high numerical aperture

Yoshiyuki Asahara, Hiroyuki Sakai, Sigeaki Ohmi, Shin Nakayama, Yoshitaka Yoneda, and Tetsuro Izumitani
Appl. Opt. 25(19) 3384-3387 (1986)

Theoretical considerations for anticipating of function analysis on a gradient index-lens fabrication through double ion-exchange process

Banafsheh Zakeri and Arash Sabatyan
Appl. Opt. 51(26) 6290-6294 (2012)