Phase and amplitude calibration of dual‐mask spatial light modulator for high‐resolution femtosecond pulse shaping

2015 ◽  
Vol 51 (8) ◽  
pp. 642-644 ◽  
Author(s):  
B. Döpke ◽  
J.C. Balzer ◽  
M.R. Hofmann
Keyword(s):  
High Resolution ◽  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Spatial Light Modulator ◽  
Light Modulator

Intense femtosecond pulse shaping using a fused-silica spatial light modulator

2007 ◽  
Vol 270 (2) ◽  
pp. 305-309 ◽  
Author(s):  
Yu Oishi ◽  
Akira Suda ◽  
Fumihiko Kannari ◽  
Katsumi Midorikawa
Keyword(s):  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Spatial Light Modulator ◽  
Fused Silica ◽  
Light Modulator

Diffraction-based femtosecond pulse shaping with a two-dimensional spatial light modulator

2005 ◽  
Vol 30 (3) ◽  
pp. 323 ◽  
Author(s):  
Joshua C. Vaughan ◽  
Thomas Hornung ◽  
T. Feurer ◽  
Keith A. Nelson
Keyword(s):  
Pulse Shaping ◽  
Femtosecond Pulse ◽  
Spatial Light Modulator ◽  
Two Dimensional ◽  
Light Modulator

scholarly journals Phase-only transmissive spatial light modulator based on tunable dielectric metasurface

Science ◽  
2019 ◽  
Vol 364 (6445) ◽  
pp. 1087-1090 ◽  
Author(s):  
Shi-Qiang Li ◽  
Xuewu Xu ◽  
Rasna Maruthiyodan Veetil ◽  
Vytautas Valuckas ◽  
Ramón Paniagua-Domínguez ◽  
...  
Keyword(s):  
High Resolution ◽  
Spatial Light Modulator ◽  
Deflection Angle ◽  
Beam Steering ◽  
Beam Deflection ◽  
Spatial Light Modulators ◽  
Light Modulator ◽  
Steering Angle ◽  
Holographic Display ◽  
Light Modulators

Rapidly developing augmented reality, solid-state light detection and ranging (LIDAR), and holographic display technologies require spatial light modulators (SLMs) with high resolution and viewing angle to satisfy increasing customer demands. Performance of currently available SLMs is limited by their large pixel sizes on the order of several micrometers. Here, we propose a concept of tunable dielectric metasurfaces modulated by liquid crystal, which can provide abrupt phase change, thus enabling pixel-size miniaturization. We present a metasurface-based transmissive SLM, configured to generate active beam steering with >35% efficiency and a large beam deflection angle of 11°. The high resolution and steering angle obtained provide opportunities to develop the next generation of LIDAR and display technologies.

scholarly journals Chirp compensation of femtosecond pulse by liquid-crystal spatial light modulator

2004 ◽  
Vol 53 (5) ◽  
pp. 1391
Author(s):  
Wei Heng-Zheng ◽  
Zhang Zhi-Gang ◽  
Chen Sheng-Hua ◽  
Chai Lu ◽  
Wang Qing-Yue
Keyword(s):  
Liquid Crystal ◽  
Femtosecond Pulse ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Chirp Compensation

Development of a Novel Surface Processing System Using Femtosecond Pulse Train

2012 ◽  
Vol 523-524 ◽  
pp. 220-225 ◽  
Author(s):  
Yusuke Fukuta ◽  
Terutake Hayashi ◽  
Masaki Michihata ◽  
Yasuhiro Takaya
Keyword(s):  
Pulse Train ◽  
Femtosecond Pulse ◽  
Spatial Light Modulator ◽  
Thermal Damage ◽  
Processing System ◽  
Heat Diffusion ◽  
Coherent Phonon ◽  
Light Modulator ◽  
Femtosecond Laser Processing ◽  
Specific Frequency

When a laser pulse interacts with metal or semiconductor target, the coherent phonon, which is the coherent motions of lattice and molecule vibrations in solids, is excited by the interaction of electrons and high latitude electric field. It has unique properties of decaying in approximately several picoseconds and substance specific frequency. Owing to that, femtosecond laser processing is the local processing with little heat diffusion and little thermal damage to the target, due to the ultrafast time scales. We propose a novel femtosecond pulse ablation process with oscillation of the coherent phonon by femtosecond pulse train. The pulse train is shaped using Spatial Light Modulator (SLM), which shift the phase of the passing light. And coherent phonon oscillations are enhanced and decayed due to the controlling the shape of pulse train. It is able to activate the lattice motion for processing efficiently, and hence the target is expected to be ablated with high accuracy and less thermal damage.

High-Resolution Correction of Arbitrary Wavefront Aberration Using Liquid Crystal Spatial Light Modulator

2011 ◽  
Vol 121-126 ◽  
pp. 877-881
Author(s):  
Hong Xin Zhang ◽  
Xiao Xi Xu
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Spatial Light Modulator ◽  
Low Cost ◽  
Phase Conjugation ◽  
Astronomical Observation ◽  
Wavefront Aberration ◽  
Strehl Ratio ◽  
Light Modulator ◽  
Wavefront Correction

Wavefront correction plays significant role in some fields like astronomical observation, laser processing and medical imaging, etc. Liquid crystal spatial light modulator ( LC SLM) is an ideal device for high-resolution wavefront correction because of its low cost, low consumption, large number of pixels and independent programming control of each unit. It is researched experimentally that LC SLM is used as a wavefront correction device and corrects arbitrary wavefront aberration. Wavefront correction is performed based on phase conjugation and periodic phase modulation with modulo-2π. The experimental results show that the PV value of the irregular wavefront aberration is 1.56λ, RMS value is 0.25 and Strehl ratio is 0.08 before correction, but the PV value of the residual aberration is reduced to 0.26λ, RMS value is 0.02 and Strehl ratio is increased to 0.97 which is approximated diffraction limit after correction. It is proved to be feasible and effective that LC SLM is used to the high-precision and high-resolution wavefront correction.

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