Getting to Grips with Light

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Science  17 Aug 2001:
Vol. 293, Issue 5533, pp. 1265-1267
DOI: 10.1126/science.1064465

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Laser fields may in principle be tailored to specific applications in wavelength and pulse duration through combining two different laser pulses, but as Brown et al. explain in their Perspective, achieving this goal is far from simple. Shelton et al. have made an important step toward this goal. Their combined laser may be viewed as a single "superpulse" with a broader range of wavelengths than either of the two individual pulses.