Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Experiment and modeling show that the refractive index nonlinearity can significantly degrade the contrast of a chirped-pulse amplifier seeded with a pulse and a single postpulse. Multiple powerful non-equidistant pre- and postpulses are generated. For a Gaussian pulse and a hat-top beam, an incident postpulse of energy W results in a prepulse of energy 0.58B(2)W, where B is the nonlinear phase (B-integral) of the main pulse. Calculations show that level of satellites due to gain saturation is negligibly small. Experimental results for Ti:Sapphire regenerative and multipass amplifiers and prepulse generation in fused silica agree well with the theory.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/oe.16.003178 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Watt-level femtosecond praseodymium-doped fluoride fiber amplifier at 1300 nm.
Opt Express
March 2025
Watt-level chirped pulse amplification based on praseodymium-doped fluoride fibers (Pr:ZBLAN) has been demonstrated. We have successfully amplified the 1300 nm dispersive wave from a highly nonlinear fiber to an average power of 1.33 W using a three-stage Pr:ZBLAN amplifier.
View Article and Find Full Text PDFRepetition-rate upscaling of intense, femtosecond-duration pulses in the short-wave infrared is necessary to further develop and apply tabletop, ultrafast soft-X-ray sources. Here, we present a 20 fs-pulse-duration, 2.1 µm-central-wavelength, optical parametric chirped-pulse amplification laser, which outputs 52 W of amplified signal power at a repetition rate of 52.
View Article and Find Full Text PDFA hybrid chirped pulse amplification (CPA) system is demonstrated based on a fiber seed source and a three-stage Yb:YAG crystal amplifier. We investigate the mechanism of gain narrowing in a CPA system through theoretical and experimental research. The gain narrowing can be suppressed by pre-shaping the pulse spectrum via a fiber Bragg grating (FBG) with a specifically designed spectral characteristic before amplification.
View Article and Find Full Text PDF2.05 µm CPA delivering 75 mJ pulses with 2.2 ps duration at a 1 kHz repetition rate.
Opt Express
April 2025
We report on a high-energy Ho:YLF chirped pulse amplifier (CPA) operating at 1 kHz. The amplifier chain is composed of a regenerative amplifier (RA) and a power amplifier containing two stages. The 25-kHz seed source is an optical parametric chirped pulse amplifier based on a Yb:KGW laser.
View Article and Find Full Text PDFVibrational modes of glucose spanning from 900 to 1400 cm in the molecular fingerprint region have been traced by means of vibrational sum-frequency generation spectroscopy in aqueous solution as a function of glucose concentration. The high sensitivity is enabled by a 200 kHz few-cycle mid-infrared optical parametric chirped-pulse amplifier (OPCPA). The OPCPA generates broadband pulses (from 7 to 11 m) centered at 9 m with 114 fs pulse duration, at a high average power of 245 mW and high pulse energy of 1.
View Article and Find Full Text PDF