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Q-switching, sometimes known as giant pulse formation or Q-spoiling, [1] is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high peak power, much higher than would be produced by the same laser if it were operating in a continuous wave (constant output) mode.
The minimum pump power needed to begin laser action is called the lasing threshold. The gain medium will amplify any photons passing through it, regardless of direction; but only the photons in a spatial mode supported by the resonator will pass more than once through the medium and receive substantial amplification.
High-definition video (HD video) is video of higher resolution and quality than standard-definition. While there is no standardized meaning for high-definition , generally any video image with considerably more than 480 vertical scan lines (North America) or 576 vertical lines (Europe) is considered high-definition.
The full-color image shows 1080 resolution. 1080p (1920 × 1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen vertically; [1] the p stands for progressive scan, i.e. non ...
A mode-locked laser is capable of emitting extremely short pulses on the order of tens of picoseconds down to less than 10 femtoseconds.These pulses will repeat at the round trip time, that is, the time that it takes light to complete one round trip between the mirrors comprising the resonator.
Last Action Hero was released on VHS and LaserDisc on January 26, 1994, [31] and on DVD on October 7, 1997. On February 3, 2009, Last Action Hero was reissued on DVD by Sony Pictures Home Entertainment in a double-feature set with the 1986 film Iron Eagle. [32] It was released on the high-definition Blu-ray Disc format on January 12, 2010.
The first GoPro Hero, a film camera encased in a waterproof shell. The company was founded by Nick Woodman in 2002. [10] He was motivated by a 2002 surfing trip to Australia, in which he was hoping to capture high-quality action photos but could not because amateur photographers could not get close enough or buy appropriate quality equipment at reasonable prices. [11]
Video Warrior Laserion (Japanese: ビデオ戦士レザリオン, Hepburn: Bideo Senshi Rezarion) is a Japanese anime television series animated by Toei Animation. [1] It aired on TBS from March 4, 1984, to February 3, 1985 with a total of 45 episodes. [1] It is also referred to as Rezarion, Laserion and its literal translation Video Senshi ...