Abstract

A hybrid dispersion grating consisting of several segments of different groove types and groove densities is designed to disperse the laser beam and eventually to redistribute the speckles of the laser beam in different directions (linear, radial, and azimuthal). The elaborately designed redistribution of the speckles significantly improves the irradiation uniformity of the focal spot. As the focal spot is smoothed in at least two of the three directions, the scheme using the hybrid dispersion grating is called multidirectional smoothing by spectral dispersion. Results indicate that the performance and feasibility of the multidirectional smoothing scheme are better than the smoothing scheme based on a linear grating or a star grating.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Smoothing scheme for intensity sweep and polarization rotation at a subpicosecond timescale

Muyu Yi, Zheqiang Zhong, and Bin Zhang
J. Opt. Soc. Am. B 37(1) 188-196 (2020)

Three-directional spectral dispersion for smoothing of a laser irradiance profile

G. Miyaji, N. Miyanaga, S. Urushihara, K. Suzuki, S. Matsuoka, M. Nakatsuka, A. Morimoto, and T. Kobayashi
Opt. Lett. 27(9) 725-727 (2002)

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 (7)

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

Equations (6)

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