Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Monolithic bifocal zone-plate lenses for confocal collimation of laser diodes

Not Accessible

Your library or personal account may give you access

Abstract

An elliptical monolithic bifocal zone plate as a collimating lens, whose two focal lengths in the orthogonal directions match the different beam waist positions of the fast and slow axes’ light from edge-emitting laser diodes, is proposed and experimentally demonstrated by employing femtosecond laser direct writing technology. The high-quality eight-level zone plate exhibits a diffraction efficiency of 92.9%, which is much higher than those ever reported. Shaped by the elliptical lens, the laser diodes’ divergence angles are simultaneously reduced from 65° (1134 mrad, fast axis) and 24° (418 mrad, slow axis) to 7.7 and 136.5 mrad, respectively.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Holographic zone plates for f · θ and collimating lenses

Yuzo Ono and Nobuo Nishida
Appl. Opt. 25(5) 794-797 (1986)

Beam shaping of edge-emitting diode lasers using a single double-axial hyperboloidal micro-lens

Zhen-Nan Tian, Li-Jie Wang, Qi-Dai Chen, Tong Jiang, Li Qin, Li-Jun Wang, and Hong-Bo Sun
Opt. Lett. 38(24) 5414-5417 (2013)

Locking and wavelength selection of an ultra-collimated single-mode diode laser bar by a volume holographic grating

Natalia Trela, Howard J. Baker, and Denis R. Hall
Opt. Express 21(4) 4512-4517 (2013)

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 Optica member, or as an authorized user of your institution.

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

Figures (4)

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.

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

Equations (9)

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.

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved