Topic
Supercontinuum
About: Supercontinuum is a research topic. Over the lifetime, 7071 publications have been published within this topic receiving 127671 citations.
Papers published on a yearly basis
Papers
More filters
40 citations
TL;DR: In this paper, the Alise beamline (26J, 32TW pulses) was sent vertically into the atmosphere and the highly nonlinear propagation of the beam in the air gave rise to more than 400 self-guided filaments.
Abstract: Ultrahigh power laser pulses delivered by the Alise beamline (26J, 32TW pulses) have been sent vertically into the atmosphere. The highly nonlinear propagation of the beam in the air gives rise to more than 400 self-guided filaments. This extremely powerful bundle of laser filaments generates a supercontinuum propagating up to the stratosphere, beyond 20km. This constitutes the highest power “atmospheric white-light laser” to date.
40 citations
TL;DR: These are the longest wavelength temporally characterized solitons generated in silica-based fibers and more than octave-spanning femtosecond supercontinuum generation in the 1.0-2.6 μm range.
Abstract: We report generation of femtosecond optical pulses tunable in the 1.6-2.5 μm range using GeO2-doped core silica-cladding fibers. Optical solitons with a duration of 80-160 fs have been measured by the FROG technique in the 2-2.3 μm range. To the best of our knowledge, these are the longest wavelength temporally characterized solitons generated in silica-based fibers. We have also demonstrated more than octave-spanning femtosecond supercontinuum generation in the 1.0-2.6 μm range.
40 citations
TL;DR: In this article, the dispersion properties and electric field distribution of the fundamental mode were calculated by using the full-vector finite element method (FVFEM) and simulation results indicate that the zero-dispersion wavelength of the chloroform-filled PCF is adjustable around 800 nm.
40 citations
TL;DR: This work demonstrates that upconverting the MIR signal into the near-infrared (NIR) region, where cost-effective silicon-based detector arrays can be utilized to measure broadband absorption, and presents a least-square global fitting method for multi-species detection.
Abstract: Recent advancements of mid-infrared (MIR) supercontinuum light sources have opened up new possibilities in laser-based trace gas sensing. While the supercontinuum sources inherently support wide spectral coverage, the detection of broadband absorption signals with high speed and low cost is traditionally limited by the MIR detector arrays. In this work, we demonstrate that this limitation can be circumvented by upconverting the MIR signal into the near-infrared (NIR) region, where cost-effective silicon-based detector arrays can be utilized to measure broadband absorption. We also show that, by combining a MIR supercontinuum source with a MIR-to-NIR upconverter and an astigmatic multipass cell, fast detection (~20 ms) of ethane with sub-ppmv sensitivity can be achieved at room temperature. For multi-species detection, a least-square global fitting method is presented, showing a promising potential for applications such as environmental monitoring and biomedical research.
40 citations