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The process begins with a femtosecond laser cutting GaN dielets from a wafer and drilling precise cavities into the diamond substrate.—Atharva Gosavi, Interesting Engineering, 8 June 2026 The new prototype, still very far from being practical, took femtoseconds (quadrillionths of a second) to charge and stored the energy for nanoseconds.—New Atlas, 4 Apr. 2026 In a study, Microsoft scientists sought to overcome those deficiencies by using femtosecond lasers, which fire high-power laser pulses just quadrillionths of a second long.—IEEE Spectrum, 18 Feb. 2026 Data is written encoded in an array of data matrices using a 2-D digital micro mirror with up to 2 million elements simultaneously written by femtosecond laser pulses in the UV spectrum with a write speed of 1GB/s and with less than 1W average power.—Thomas Coughlin, Forbes.com, 21 Jan. 2026 See All Example Sentences for femtosecond