 Portable, microbench light sources based on diode lasers emitting at two wavelengths improve the ratio of signal-to-background noise for chemical analysis without wavelength calibration. 16 May 2013
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 President Reagan most likely knew that advances in laser technology would give the United States the upper hand in nuclear talks with the Soviets. 16 May 2013
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 Two robust approaches using digital holograms programmed onto spatial light modulators provide fast and simple measurements of the laser beam propagation ratio. 15 May 2013
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 The antiproton mass in units of the electron mass is determined with parts-per-billion scale precision by studying an exotic helium atom with two-photon laser spectroscopy. 22 April 2013
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 Mid-IR semiconductor lasers are optimized by efficient electron transport and by employing two consecutive cascaded optical transitions to enhance efficiency. 3 April 2013
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 Control over the precise number of atoms in gold nanoclusters gives rise to distinct nonlinear optical properties, providing an attractive route toward optical limiting devices. 1 April 2013
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