18 August 2014 A novel method for holographic femtosecond laser parallel processing using digital blazed grating and the divergent spherical wave
Author Affiliations +
Abstract
A novel method for holographic femtosecond laser parallel processing is proposed, which can suppress the interference of zero order light effectively and improve the energy utilization rate. In order to blaze the target pattern to the peak position of zero-order interference, a phase-only hologram containing digital blazed grating are designed and generated, The energy of the target pattern can be increased to 5.297 times in theory. In addition, by subsequently increasing the phase of divergent spherical wave, the focal plane of the target pattern and the plane of multi-order diffraction beam resulted from pixelated structure of the spatial light modulator (SLM) can be separated. Both the high pass filter and aperture are used to eliminate the influences of zero-order light and multi-order interferential patterns simultaneously. A system based on the phase-only SLM (with resolution of 1920*1080) is set up to validate the proposed method. The experimental results indicate that the proposed method can achieve high quality holographic femtosecond laser parallel processing with a significantly improved energy utilization rate.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chaowei Wang, Chaowei Wang, Yahui Su, Yahui Su, Jinli Wang, Jinli Wang, Chenchu Zhang, Chenchu Zhang, Ziyu Zhang, Ziyu Zhang, Jiawen Li, Jiawen Li, } "A novel method for holographic femtosecond laser parallel processing using digital blazed grating and the divergent spherical wave", Proc. SPIE 9204, Interferometry XVII: Advanced Applications, 92040R (18 August 2014); doi: 10.1117/12.2060664; https://doi.org/10.1117/12.2060664
PROCEEDINGS
6 PAGES


SHARE
RELATED CONTENT

Holographic 3D disks using shift multiplexing
Proceedings of SPIE (September 08 1995)
Holographic Mirrors
Proceedings of SPIE (June 12 1985)
Shift-multiplexed holographic 3D disk
Proceedings of SPIE (May 07 1996)
Beam steering device using CGHs
Proceedings of SPIE (June 04 2003)

Back to Top