Thermally induced birefringence and thermal lensing in Nd:YAG rod amplifier was compensated by a 900 rotator with three sets of imaging optics. Experimentally, 2.8% single pass birefringence loss was achieved and a nearly diffraction limited amplified output was observed.
First year undergraduates find it hard to assign absolute configuration to a chiral center when the lowest priority group is either to the left or right of the horizontal line.
Amplifier 4 2w /3w Conversion 1.06 4µm 0 532µm 0.355µm
ABSTRACTWe are developing a high-repetition and high-average-power Nd:YAG laser amplifier pumped by fiber coupled LDs in order to apply to laser machining of carbon composite materials such as CFRP (Carbon Fiber Reinforced Plastic). Final target is 1.5 kW output at wavelength of 1064 nm by 8 kW LD pumping. The amplifier consists of several Nd:YAG ceramic thin discs on a non-doped ceramic YAG block. At first, we measured wave-front distortion and small-signal gain of a prototype amplifier whose target is more than 500 W output.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.