Related Experiment Video
Updated: Apr 17, 2026
Low-intensity Blast Wave Model for Preclinical Assessment of Closed-head Mild Traumatic Brain Injury in Rodents
Published on: November 6, 2020
Pulse compression based on graded-index rods
Abstract:
We demonstrate a simple and robust platform for femtosecond pulse compression based on large-area graded-index (GRIN) rods. Despite highly-multimode propagation, pulses accumulate a spatially uniform nonlinear phase owing to the self-imaging property of GRIN media. In initial experiments, 420 fs and ∼100 nJ pulses are compressed to 60 fs duration with excellent beam quality and spatio-spectral homogeneity. Furthermore, simultaneous beam cleaning and pulse compression are possible with complex input beams. Similar compression performance is obtained with different input beam sizes and positions, which underlie the stability and ease of use of the GRIN rod compressor.
Related Concept Videos
01:30Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:17Pulse amplitude and quality
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
01:11Assessment of radial pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps: