Optimized Silicon Asymmetric Dual-Pillar Grating for Dielectric Laser Acceleration of Subrelativistic Electrons with Enhanced Accelerating Gradient
- Resource Type
- Journal Article
- Authors
- Kazuyoshi KOYAMA; Mitsuhiro YOSHIDA; Mitsuru UESAKA; Zhaofu CHEN
- Source
- The Review of Laser Engineering. 2017, 45(2):104
- Subject
- Dielectric laser acceleration
Grating structure
High accelerating gradient
Subrelativistic electrons
- Language
- English
- ISSN
- 0387-0200
1349-6603
Dielectric laser accelerator has great potential for the miniaturization of particle accelerators. We present results of the numerical investigation of a silicon dual-pillar grating structure with a high accelerating gradient for subrelativistic electrons. An asymmetric configuration is utilized to generate an accelerating mode with lower skew. Driven by a 1550 nm laser with a peak fluence of 20 mJ/cm2 and a pulse length of 100 fs, the structure could achieve a maximum gradient of 0.42 GV/m for 50 keV electrons.