Ceramic and Crystal Materials for Optics and Photonics: Session II
Sponsored by: ACerS Basic Science Division, ACerS Glass & Optical Materials Division
Program Organizers: Yiquan Wu, Alfred University; Jas Sanghera, Naval Research Laboratory; Akio Ikesue, World-Lab. Co., Ltd; Mark Dubinskiy, Army Research Laboratory; Xiang Hua Zhang, University of Rennes - and - Materials Science Department, University of Arizona; Michael Squillante, Radiation Monitoring Devices Inc; Long Zhang, Shanghai Institute of Optical and Fine Mechanics, Chinese Academy of Science; Takunori Taira, National Institutes of Natural Science

Wednesday 2:00 PM
November 4, 2020
Room: Virtual Meeting Room 15
Location: MS&T Virtual

2:00 PM  Invited
Giant Micro-photonics toward Table-top XFEL: Takunori Taira¹; ¹RIKEN SPring-8 / IMS
    We propose a new architecture to realize a monolithic multi-disk laser by the surface activated bonding (SAB). This multiple thin-disk or micro-chip gain medium base distributed face cooling (DFC) structure has an excellent thermal management with high-gain to realize the high-power and high-field laser with compact system. With Nd:YAG/sapphire DFC-chip, a sub-nanosecond 21.5mJ, 32.5 MW pulsed microchip laser was achieved. Today, multi-J class output energy DFC-chip amplification at room temperature operation could be realized. Nonlinear optics could expand the potential of high-brightness laser source. A large aperture quasi-phase matching (QPM) device of LA-PPMgLN enable the high-efficient optical generation of narrowband THz waves for the newly proposed dielectric particle acceleration (THz-DLA). These downsized and modularized tiny integrated lasers (TILA) promise the “Giant Micro-photonics“ extremely high-brightness lasers to open up the new science, such as laser driven electron accelerator toward table-top XFEL, and innovation by the compact power laser.

2:40 PM  Invited
Microstructural Evolution and Cantilever Bending of AlON Transparent Ceramics: Ying Shi¹; ¹Shanghai University
    In this paper,the microstructure evolution process of AlON transparent ceramics during densification were systemically investigated. It was found that binary twin structure is ubiquitous in the synthesized powder particles. The EBSD results show that the twin structure has the same orientation difference of {111}/60°. A large number of dislocations are accumulated around the twin boundary, and the dislocation density is about 6.023 × 10¹⁵ m^-2, It was found by EBSD that a ternary twin crystal with a novel sandwich structure appeared in the AlON ceramics in addition to the binary twins. The misorientation of the sandwich-like twins was completely consistent with that of the twins in the powder, which is {111}/60°. The high-resolution EBSD technique is used to obtain the residual stress distribution in the twins in powder and ceramics.Through the cantilever beam bending test, the stress-strain curves of the AlON cantilever beams with three different interfaces were obtained.