Essays about: "pulse compression"

Showing result 1 - 5 of 18 essays containing the words pulse compression.

1. 1. Spectral broadening of 4 mJ femtosecond pulses using a bulk multi-pass cell

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Saga Westerberg; [2023]
   Keywords : Lasers; Ultrashort; Nonlinear Optics; femtosecond; Multi-Pass Cell; Spectral broadening; pulse post-compression; Self phase modulation; Physics and Astronomy;

   Abstract : Nonlinear optical effects can be used for spectral broadening, which the basis of the field of post-compression of laser pulses. When the intensity of light becomes high enough the refractive index becomes intensity dependent, and as the intensity often varies both with position and time so does the refractive index. READ MORE

3. 2. RF Compressor (SLED) Phase-Modulation to Reduce Peak Fields in the MAX IV Linear Accelerator

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Joel Ekström; [2023]
   Keywords : Accelerator; MAX IV; LINAC; Phase-modulation; SLED; Pulse compression; Technology and Engineering;

   Abstract : Modern particle accelerators need strong electric fields in order to produce high energy particles. Such high voltages are typically reached by injecting pulsed radio frequency power through several steps of amplification. At the end, pulse compression is used to further improve the energy gain at the cost of pulse-length. READ MORE

4. 3. LPI waveforms for AESA radar

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Andreas Sjöberg; [2020]
   Keywords : Radar LPI waveform AESA;

   Abstract : The purpose of low probability of intercept (LPI) radar is, on top of the standard requirements on a radar, to remain undetected by hostile electronic warfare (EW) systems. This can be achieved primarily by reducing the amount of radiated power in any given direction at all times and is done by transmitting longer modulated pulses that can then be compressed digitally in order to retain range resolution. READ MORE

5. 4. Dispersion management and characterization of ultrashort laser pulses for the optimization of parametric processes

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Axel Elfving; [2019]
   Keywords : frequency resolved optical gating; optical parametric amplification; difference frequency generation; nonlinear optics; laser pulse compression; lasers; optics; Technology and Engineering; Physics and Astronomy;

   Abstract : This thesis set out to continue the development of a short-wave infrared (SWIR) optical parametric amplifier (OPA). The system is based on a Yb-ber chirped pulse amplification (CPA) laser delivering 400 fs long pulses, centered around 1030 nm, at 200 kHz repetition rate and 40 W average power. READ MORE

6. 5. Noncollinear optical parametric amplification of a supercontinuum

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Henrik Åkesson; [2019]
   Keywords : optical parametric amplification; supercontinuum generation; nonlinear optics; laser pulse compression; lasers; optics; Physics and Astronomy; Technology and Engineering;

   Abstract : During this thesis, work has been done towards realizing a short-wave infrared (SWIR) laser source based on optical parametric amplification. It is planned that this setup should be able to produce few-cycle laser pulses at 2μm with a stable carrier-envelope phase (CEP). READ MORE