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Science 16 November 2007:
Vol. 318. no. 5853, p. 1033
DOI: 10.1126/science.318.5853.1033d
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This Week in Science

Figure 1 Excitation of microstructured optic fibers with intense femtosecond laser pulses can generate broadband white light, and applications range from metrology to the generation of ultrafast pulses of a chosen wavelength. The principles behind white-light generation and optical guidance have not been well understood, and the control of the location and spectral range of the generated light has been limited. Couny et al. (p. 1118) developed theoretical insights into the guidance of light and generation of higher-order modes in the microstructured fibers that has allowed the generation of a frequency comb spanning an extremely wide spectral range with modest input power. The authors discuss how this approach could enable a simplified route to femto- and attosecond pulse generation and arbitrary waveform synthesis.

CREDIT: FETAH BENABID/UNIVERSITY OF BATH




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Science. ISSN 0036-8075 (print), 1095-9203 (online)