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Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semicon...
Recently, TechStar Acquisition Corporation (07855. HK), a special purpose acquisition company, announced that Seyond, the successor company of the special purpose acquisition transaction, has submitted a new listing application. Seyond plans to land on the Hong Kong Stock Exchange under the De SPAC model. This means that Seyond is only one step away from going public through a backdoor listing. If...
Typically, for lasers in optical communication systems, waveguide designs are used to achieve a single transverse mode. By adjusting the thickness of the surrounding area of the cladding layer and the etching depth of the ridge in the ridge waveguide device, a single mode device can be obtained. The importance of lasers is reflected in the following aspects:A chip without ridge waveguide design an...
This month, German laser giant Trumpf completed an expansion project at its smart factory in Pasing, Austria. The opening ceremony was held in the presence of members of the Tongkuai Group family and representatives from the business and political circles. Over the past two years, Tongkuai has invested approximately 40 million euros in the expansion of the factory. The company has built two new...
Many materials emit light in ways that encode information in its polarization. According to researchers at École Polytechnique Fédérale de Lausanne (EPFL), Switzerland, polarization is key for future technologies, from quantum computers to secure communication and holographic displays.Among such phenomena is a form known as circularly polarized luminescence (CPL), a special type of light emission ...