Abstract

The light extraction efficiency of a light-emitting element with microstructured surface is analyzed with a rigorous grating diffraction theory. The grating theory reveals an improvement of extraction efficiency due to diffraction of light by the surface microstructure. The simulation results show that the improvement of extraction efficiency is due mainly to the reflected diffraction rather than to the transmitted diffraction. A part of total-internal-reflection light is diffracted into directions at less than the critical angle. Extraction efficiency is improved by multiple reflection and diffraction of light in a high-refractive-index layer. We propose a simple design method for an efficient surface microstructure from the viewpoint of reflected diffraction.

© 2006 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Multifunctional light escaping architecture inspired by compound eye surface structures: From understanding to experimental demonstration

Young Min Song, Gyeong Cheol Park, Sung Jun Jang, Jong Hoon Ha, Jae Su Yu, and Yong Tak Lee
Opt. Express 19(S2) A157-A165 (2011)

Angle-tuned, evanescently-decoupled reflector for high-efficiency red light-emitting diode

Sun-Kyung Kim, Hyun Kyong Cho, Kyung Keun Park, Junho Jang, Jeong Soo Lee, Kyung Wook Park, Youngho Park, Ju-Young Kim, and Yong-Hee Lee
Opt. Express 16(9) 6026-6032 (2008)

Calculation method of reflectance distributions for computer-generated holograms using the finite-difference time-domain method

Tsubasa Ichikawa, Yuji Sakamoto, Agus Subagyo, and Kazuhisa Sueoka
Appl. Opt. 50(34) H211-H219 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (22)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription