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The pump source, gain material, and resonant cavity are the three elements that make up a laser. Due to the selective effect of the resonant cavity on the lasing frequency, multi longitudinal mode operation is one of the characteristics of fiber lasers based on traditional resonant cavity structures, manifested as periodic beat peaks in the radio frequency (RF) spectrum and periodic fluctuations i...
Recently, a joint research team composed of Sun Meizhi, associate researcher of the High Power Laser Physics Joint Laboratory of the Chinese Academy of Sciences Shanghai Institute of Optics and Precision Mechanics, and Tu Xiaoniu, associate researcher of the Chinese Academy of Sciences Shanghai Institute of Silicate, proposed a new configuration of cross Fabry Perot intracavity optical parametric ...
IntroductionVortex beams carrying orbital angular momentum (OAM) are widely used for high-throughput optical information multiplexing, and achieving on chip, small-scale vortex lasers is crucial for promoting the industrial implementation of vortex light reuse technology. Recently, Gu Min, an academician of Shanghai University of Technology, and Fang Xinyuan, an associate professor of Shanghai Uni...
Recently, SMART Photonics, a Dutch photonic integrated circuit manufacturer, announced a major decision to transfer its entire production capacity from 3-inch wafers to 4-inch silicon substrates, thereby expanding the production scale of photonic chips and significantly reducing chip prices.According to the company, SMART Photonics is one of the first photonic integrated circuit foundries to provi...
With the rapid development of modern electronic information technology, integrated circuit chip packaging forms are also emerging in an endless stream, and the package density is getting higher and higher, which greatly promotes the development of electronic products to multi-function, high performance, high reliability and low cost.So far, through hole technology (THT) and surface mount technolog...