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  2. Picosecond ultrasonics - Wikipedia

    en.wikipedia.org/wiki/Picosecond_Ultrasonics

    Picosecond ultrasonics is a type of ultrasonics that uses ultra-high frequency ultrasound generated by ultrashort light pulses. It is a non-destructive technique in which picosecond acoustic pulses penetrate into thin films or nanostructures to reveal internal features such as film thickness as well as cracks, delaminations and voids.

  3. Ultrashort pulse laser - Wikipedia

    en.wikipedia.org/wiki/Ultrashort_pulse_laser

    Common current ultrashort pulse laser technologies include Ti-sapphire lasers and dye lasers. High output peak power usually requires chirped pulse amplification of a seed pulse from a modelocked laser. Dealing with high optical powers also needs the nonlinear optical phenomena to be taken in account. [citation needed]

  4. Picotechnology - Wikipedia

    en.wikipedia.org/wiki/Picotechnology

    Picoscience is a term used by some futurists to refer to structuring of matter on a true picometre scale. Picotechnology was described as involving the alteration of the structure and chemical properties of individual atoms, typically through the manipulation of energy states of electrons within an atom to produce metastable (or otherwise stabilized) states with unusual properties, producing ...

  5. Ultrashort pulse - Wikipedia

    en.wikipedia.org/wiki/Ultrashort_pulse

    In optics, an ultrashort pulse, also known as an ultrafast event, is an electromagnetic pulse whose time duration is of the order of a picosecond (10 −12 second) or less. Such pulses have a broadband optical spectrum , and can be created by mode-locked oscillators.

  6. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    12 as: The best timing control of laser pulses. [7] 43 as: The shortest X-ray laser pulse [8] 53 as: The shortest electron laser pulse [9] [10] 10 −15: femtosecond: fs One quadrillionth of one second 1 fs: The cycle time for ultraviolet light with a wavelength of 300 nanometres; The time it takes light to travel a distance of 0.3 micrometres ...

  7. 10 Over-the-Top Christmas Decorations That Cost a Fortune - AOL

    www.aol.com/10-over-top-christmas-decorations...

    Elaborate and expensive Christmas light displays have become a hallmark of the holiday season, with enthusiasts all over the world pouring in time, effort, and tons of money to create these ...

  8. College football award winners: Full list of winners for 2024 ...

    www.aol.com/college-football-award-winners-full...

    We're firmly in awards season with the 2024 college football regular season and conference championships complete.. While the 2024 Heisman Trophy will be awarded on Saturday, the nation's top ...

  9. Sisters Separated into Forced Labor Camps During World ... - AOL

    www.aol.com/lifestyle/sisters-separated-forced...

    Sisters Helena and Barbara Stefaniak had their worlds turned upside down after the start of World War II. The sisters, who were living in Poland, were separated and put into work camps as teens ...