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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...
In most cases, devices that are part of so-called smart homes have become a part of our lives. These appliances have a significant impact on our comfort level and contribute to daily household chores, such as cleaning. There are many products in the market that have paved the way in this regard, but the amount we usually have to pay for them effectively prevents us from purchasing.Of course, we ca...
In the process of selecting electric vehicles, the effectiveness of the heating system is often overlooked. However, this system is crucial for providing a warm and comfortable driving environment and removing frost and fog from winter windows. More importantly, it can also improve battery efficiency, as the battery performs best within a specific temperature range.Unlike internal combustion engin...
Recently, a Japanese research team has developed a vertical deep ultraviolet emitting semiconductor laser device based on AlGaN, which is expected to be applied in laser processing, biotechnology, and medical fields.As is well known, ultraviolet (UV) is an electromagnetic wave with a wavelength range of 100 to 380nm. These wavelengths can be divided into three regions: UV-A (315-380 nm), UV-B (280...
Recently, the UK's national synchrotron "Diamond Light Source" announced an investment of nearly £ 520 million ($648.3 million) to implement three new flagship beam lines and upgrade existing beam lines. This comprehensive upgrade will be delivered by 2030.The Department for Science, Innovation, and Technology and the biomedical charity Wellcome jointly approved the facility upgrade project,...