Contrast ratio measurement of single shot picosecond pulse using third-order noncollinear autocorrelation technique

2010 ◽  
Vol 22 (8) ◽  
pp. 1852-1856
Author(s):  
孙志红 Sun Zhihong ◽  
夏彦文 Xia Yanwen ◽  
刘华 Liu Hua ◽  
傅学军 Fu Xuejun
Keyword(s):  
Contrast Ratio ◽  
Picosecond Pulse ◽  
Single Shot ◽  
Third Order ◽  
Ratio Measurement

scholarly journals Development of a single-shot third-order cross-correlator for picosecond laser systems

2021 ◽  
Vol 483 ◽  
pp. 126672
Author(s):  
A.C. Aiken ◽  
P. Oliveira ◽  
L.E. Bradley ◽  
E. Dilworth ◽  
M. Galletti ◽  
...  
Keyword(s):  
Picosecond Laser ◽  
Single Shot ◽  
Third Order ◽  
Laser Systems

scholarly journals A new contrast ratio measurement method using image patterns

2011 ◽  
Vol 12 (2) ◽  
pp. 85-87
Author(s):  
Dongwook Choi ◽  
Sun A Yang ◽  
Jaewoo Bae ◽  
Seungbae Lee ◽  
Ho-Kyoon Chung
Keyword(s):  
Measurement Method ◽  
Contrast Ratio ◽  
Ratio Measurement

scholarly journals Layers from initial Rayleigh density profiles by directed nonlinear force driven plasma blocks for alternative fast ignition

2009 ◽  
Vol 27 (1) ◽  
pp. 149-156 ◽  
Author(s):  
E. Yazdani ◽  
Y. Cang ◽  
R. Sadighi-Bonabi ◽  
H. Hora ◽  
F. Osman
Keyword(s):  
Fluid Model ◽  
Initial Density ◽  
Contrast Ratio ◽  
Laser Pulses ◽  
Fast Ignition ◽  
Single Shot ◽  
Density Profiles ◽  
Nonlinear Force ◽  
Two Fluid Model ◽  
New Phenomena

AbstractMeasurement of extremely new phenomena during the interaction of laser pulses with terawatt and higher power and picoseconds with plasmas arrived at drastically different anomalies in contrast to the usual observations if the laser pulses were very clean with a contrast ratio higher than 108. This was guaranteed by the suppression of prepulses during less than dozens of ps before the arrival of the main pulse resulting in the suppression of relativistic self-focusing. This anomaly was confirmed in many experimental details, and explained and numerically reproduced as a nonlinear force acceleration of skin layers generating quasi-neutral plasma blocks with ion current densities above 1011A/cm2. This may support the requirement to produce a fast ignition deuterium tritium fusion at densities not much higher than the solid state by a single shot PW-ps laser pulse. With the aim to achieve separately studied ignition conditions, we are studying numerically how the necessary nonlinear force accelerated plasma blocks may reach the highest possible thickness by using optimized dielectric properties of the irradiated plasma. The use of double Rayleigh initial density profiles results in many wavelength thick low reflectivity directed plasma blocks of modest temperatures. Results of computations with the genuine two-fluid model are presented.

Single-shot diagnosing of spatiotemporal couplings in ultrashort laser pulses by spatiospectral imaging of a third-order nonlinear process

2020 ◽  
Vol 45 (8) ◽  
pp. 2207
Author(s):  
Margoto Jean-Baptiste ◽  
Cheng Zhao ◽  
Lopez-Martens Rodrigo ◽  
Oksenhendler Thomas
Keyword(s):  
Laser Pulses ◽  
Nonlinear Process ◽  
Ultrashort Laser Pulses ◽  
Single Shot ◽  
Third Order ◽  
Ultrashort Laser

scholarly journals A signal to noise ratio measurement for single shot laser pulses by use of an optical Kerr gate

2011 ◽  
Vol 19 (5) ◽  
pp. 4438 ◽  
Author(s):  
Junfang He ◽  
Changjun Zhu ◽  
Yishan Wang ◽  
Guanghua Cheng ◽  
Kuaisheng Zou ◽  
...  
Keyword(s):  
Signal To Noise Ratio ◽  
Laser Pulses ◽  
Single Shot ◽  
Signal To Noise ◽  
Ratio Measurement ◽  
Optical Kerr Gate ◽  
Noise Ratio

scholarly journals Independent and continuous third-order dispersion compensation using a pair of prisms

2014 ◽  
Vol 2 ◽  
Author(s):  
Qingwei Yang ◽  
Xinglong Xie ◽  
Jun Kang ◽  
Haidong Zhu ◽  
Ailin Guo ◽  
...  
Keyword(s):  
Pulse Duration ◽  
Dispersion Compensation ◽  
Contrast Ratio ◽  
Group Delay Dispersion ◽  
Third Order ◽  
Third Order Dispersion ◽  
Wide Range ◽  
Laser Systems ◽  
Order Dispersion ◽  
Pulse Contrast

Abstract The dispersion of a pair of prisms is analyzed by means of a ray-tracing method operating at other than tip-to-tip propagation of the prisms, taking into consideration the limited spectral bandwidth. The variations of the group delay dispersion and the third-order dispersion for a pair of prisms are calculated with respect to the incident position and the separation between the prisms. The pair of prisms can provide a wide range of independent and continuous third-order dispersion compensation. The effect of residual third-order dispersion on the pulse contrast ratio and pulse duration is also calculated. The residual third-order dispersion not only worsens the pulse contrast ratio, but also increases the pulse duration to the hundreds of femtosecond range for a tens of femtosecond pulse, even when the residual third-order dispersion is small. These phenomena are helpful in compensating for the residual high-order dispersion and in understanding its effect on pulse contrast ratios and pulse durations in ultrashort laser systems.

Third-order nonlinear optical properties in [(C4H9)4N]2[Cu(C3S5)2]-doped PMMA thin film using Z-scan technique in picosecond pulse

2009 ◽  
Vol 99 (1) ◽  
pp. 279-284 ◽  
Author(s):  
Heliang Fan ◽  
Xinqiang Wang ◽  
Quan Ren ◽  
Tingbin Li ◽  
Xian Zhao ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Picosecond Pulse ◽  
Nonlinear Optical Properties ◽  
Third Order
Sign in / Sign up

Export Citation Format

Share Document