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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, Teledyne Technologies announced that it has reached an agreement to acquire a portion of Excelitas Technologies' aerospace and defense electronics business for $710 million in cash.This acquisition includes the optical systems business under the Qioptiq brand headquartered in North Wales, UK, as well as the Advanced Electronic Systems (AES) business headquartered in the United States.It ...
Recently, the research team of the High end Optoelectronic Equipment Department at the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, has made progress in the study of wavefront calibration methods for interferometer testing. The relevant research results were published in Optics Express under the title of "High precision wavefront correction method ininterometer tes...
The beam emitted by almost all laser systems follows the Angle pattern of Gaussian distribution. The Gaussian irradiance distribution means that irradiance has a smooth peak at the center point and slowly declines toward the edge. In theory, the irradiance level of a Gaussian distribution can never reach zero, which means that the distribution can expand indefinitely. This phenomenon in the laser ...
Recently, Italian startup Lithium Lasers announced that the company has successfully raised 3.5 million euros in ultra short pulse laser technology.This company, founded in 2019, focuses on developing an ultra short pulse laser (USPL) called FemtoFlash, which is aimed at multiple industries such as aerospace, healthcare, automotive, and consumer electronics, particularly suitable for material proc...