Abstract

We utilize spatial and angular diversity to achieve speckle reduction in laser illumination. Both free-space and imaging geometry configurations are considered. A fast two-dimensional scanning micromirror is employed to steer the laser beam. A simple experimental setup is built to demonstrate the application of our technique in a two-dimensional laser picture projection. Experimental results show that the speckle contrast factor can be reduced down to 5% within the integration time of the detector.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Speckle reduction in laser projection using a dynamic deformable mirror

Thi-Kim-Trinh Tran, Xuyuan Chen, Øyvind Svensen, and Muhammad Nadeem Akram
Opt. Express 22(9) 11152-11166 (2014)

Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity

Dalip Singh Mehta, Dinesh N. Naik, Rakesh Kumar Singh, and Mitsuo Takeda
Appl. Opt. 51(12) 1894-1904 (2012)

Combination of micro-scanning mirrors and multi-mode fibers for speckle reduction in high lumen laser projector applications

Zhaomin Tong, Wenjiang Shen, Shaohua Song, Wenzhi Cheng, Zhuo Cai, Yifei Ma, Lei Wei, Weiguang Ma, Liantuan Xiao, Suotang Jia, and Xuyuan Chen
Opt. Express 25(4) 3795-3804 (2017)

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 (6)

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 (10)

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