High‐Power Laser Systems (Laser Photonics Rev. 16(5)/2022)

Abstract

High‐Power Laser Systems In article number 2100741, Jiexi Zou and Xuechun Lin summarize the characteristics and key technologies of solid‐state lasers. In the cover design, three types of classic high‐power laser configurations have been integrated. A disk and multi‐slabs laser are distributed in tandem, and the beam lasing from the disk further penetrates through the slabs and amplifies. Although fiber lasers have an insufficient energy output capability, this can be compensated by beam combination strategy. In the future, these three will go hand in hand.

Simultaneous NIR photoluminescence and mechanoluminescence from Cr3+ activated MgGa2O4 phosphors with multifunctions for optical sensing

“…24 Considering that the doping process follows the principle of similar ionic radii, Cr 3+ (r = 0.615 Å) is more inclined to occupy the Ga 3+ (r = 0.662 Å) site. [25][26][27][28][29] We conjecture the presence of [CrO 6 ] octahedra within the MGO:Cr 3+ phosphor. The crystal structure diagram illustrates the sequential coordination of Ga 3+ ions with Ga-O, Ga-Ga, and Ga-Mg shells.…”

Tunable broad-band absorber consisted of crossed-oval shape of graphene

“…The absorber structures can potentially be used in optoelectronic devices [31,32], catalyst [33] and filters [34,35]. In this article, graphene is applied as a layer of crossed-oval shape, with the large ellipse having a large arm being L1 = 2 μm and a small arm being W1 = 400 nm.…”

Novel Bidirectional Output Ytterbium-Doped High Power Fiber Lasers: From Continuous to Quasi-Continuous

“…Thanks to their convenient thermal management, flexible transmission, high efficiency, and good beam quality, high-power fiber lasers have been widely used, especially in industrial, medical, and scientific research fields [1][2][3]. The rapid development of active fibers, passive fiber devices, and high-brightness pump sources has ushered in a golden period for the development of high-power fiber lasers in the past two decades.…”