American defense contractor AeroVironment announced a significant upgrade for the Puma LE ISR drone, a Laser Target ...
Abstract: We present a single longitudinal mode erbium-doped fiber ring cavity laser with a long-term mode-hop-free operation by employing sub-cavity tracking feedback control method. Continuous ...
Abstract: In the nondestructive evaluation (NDE) of metals, laser-induced ultrasound is efficient in detecting internal cracks because of its flexibility and noncontact capabilities. However, image ...
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