Scalable non-mode selective Hermite Gaussian mode multiplexer based on multi-plane light conversion

2020 ◽  
Author(s):  
He Wen ◽  
Yuanhang Zhang ◽  
Rachel Sampson ◽  
Nicolas Fontaine ◽  
Ning Wang ◽  
...  
Keyword(s):  
Gaussian Mode ◽  
Plane Light

scholarly journals Full characterization of the transmission properties of a multi-plane light converter

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Pauline Boucher ◽  
Arthur Goetschy ◽  
Giacomo Sorelli ◽  
Mattia Walschaers ◽  
Nicolas Treps
Keyword(s):  
Full Characterization ◽  
Transmission Properties ◽  
Plane Light

scholarly journals Calculation of the overlap factor and correction of near-field signal of the off-axis lidar based on the Gaussian mode of laser beam

2009 ◽  
Vol 58 (10) ◽  
pp. 7376
Author(s):  
Liu Qiao-Jun ◽  
Yang Lin ◽  
Wang Jie-Yu ◽  
Zuo Hao-Yi ◽  
Luo Shi-Rong ◽  
...  
Keyword(s):  
Laser Beam ◽  
Near Field ◽  
Gaussian Mode ◽  
Overlap Factor

scholarly journals Evaluation of the Laguerre–Gaussian mode purity produced by three-dimensional-printed microwave spiral phase plates

2020 ◽  
Vol 7 (7) ◽  
pp. 200493
Author(s):  
D. Isakov ◽  
Y. Wu ◽  
B. Allen ◽  
P. S. Grant ◽  
C. J. Stevens ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Electromagnetic Waves ◽  
Three Dimensional ◽  
Direct Fabrication ◽  
Dielectric Lens ◽  
Gaussian Mode ◽  
Phase Plates ◽  
Mode Purity ◽  
Aided Design ◽  
Spiral Phase

Computer-aided design software and additive manufacturing provide flexibility for the direct fabrication of multi-material devices. This design and fabrication versatility has been investigated for the manufacture of dielectric spiral phase plates (SPP) that generate electromagnetic waves with helical wavefronts. Three types of SPPs designed to produce an orbital angular momentum (OAM) mode number l = |1| were additively manufactured using material extrusion and polyjet fabrication methods. The OAM mode characteristics of the transformed helical microwaves as a function of the SPP geometrical features were investigated experimentally in the 12–18 GHz frequency range. The SPPs were further combined with an additively manufactured dielectric lens that provided a marked improvement in OAM mode purity. Finally, multiplexing and de-multiplexing of two OAM modes were demonstrated successfully using an optimum SPP geometry and arrangement.

Demonstration of thin film compression for short-pulse X-ray generation

2019 ◽  
Vol 34 (34) ◽  
pp. 1943015
Author(s):  
D. M. Farinella ◽  
M. Stanfield ◽  
N. Beier ◽  
T. Nguyen ◽  
S. Hakimi ◽  
...  
Keyword(s):  
Thin Film ◽  
Imaging System ◽  
Short Pulse ◽  
Laser Pulses ◽  
Single Cycle ◽  
X Ray ◽  
Ultrafast Laser Pulses ◽  
Solid Density ◽  
Fs Laser ◽  
Gaussian Mode

Thin film compression to the single-cycle regime combined with relativistic compression offers a method to transform conventional ultrafast laser pulses into attosecond X-ray laser pulses. These attosecond X-ray laser pulses are required to drive wakefields in solid density materials which can provide acceleration gradients of up to TeV/cm. Here we demonstrate a nearly 99% energy efficient compression of a 6.63 mJ, 39 fs laser pulse with a Gaussian mode to 20 fs in a single stage. Further, it is shown that as a result of Kerr-lensing, the focal spot of the system is slightly shifted on-axis and can be recovered by translating the imaging system to the new focal plane. This implies that with the help of wave-front shaping optics the focusability of laser pulses compressed in this way can be partially preserved.

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