On-chip stackable dielectric laser accelerator

Structure and material study of dielectric laser accelerators based on the inverse Cherenkov effect

“…This is because when the electron energy increases, the structural pinch angle reduces, and earlier studies have shown that the pinch angle may be decreased to enhance the acceleration gradient. [30,31,34] Second, with G B ≈ G C ≥ G A , the acceleration gradients of the B and C structures are comparable and both are higher than the acceleration gradient of the A structure. This is due to the disordered electric field caused by structure A's left-side boundary effect and the existence of θ 1 (acute angle).…”

“…However, the current ICA-DLAs is still in its infancy, with relatively few structures and materials used, a lack of optimization studies on structures, and the need to explore other materials with high laser damage thresholds. [30][31][32][33][34] Our study proposes several dielectric laser accelerator (DLAs) structures based on the inverse Cherenkov effect, and we compare four materials using simulations. Our designs are experimentally feasible and enhance the acceleration gradient and energy gain compared to earlier ICA-DLAs structures.…”

On-chip ultrafast stackable dielectric laser positron accelerator

“…Notably, two pivotal concepts within DLA have emerged: the inverse Smith-Purcell effect laser dielectric acceleration [22][23][24][25][26][27] and the inverse Cherenkov effect laser dielectric acceleration. [28][29][30][31][32][33] These concepts have been studied since the 1960s, not long after the invention of lasers, and have shown great promise as viable acceleration methods.…”

“…This design eliminates the need for laser front tilting techniques and multiple lasers, which can be challenging to couple. [28][29][30][31][32][33] Additionally, the stacked structure facilitates higher acceleration gradients and energy gains, with no theoretical upper limit on acceleration energy. [32] Furthermore, the modular nature of this structure allows for additional configuration flexibility to meet the specific requirements of different applications.…”

“…[28][29][30][31][32][33] Additionally, the stacked structure facilitates higher acceleration gradients and energy gains, with no theoretical upper limit on acceleration energy. [32] Furthermore, the modular nature of this structure allows for additional configuration flexibility to meet the specific requirements of different applications. [32] In this article, we report the successful achievement of the first laser dielectric acceleration of positrons through the inverse Cherenkov effect.…”