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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 6 — Mar. 14, 2011
  • pp: 4977–4984

Diffractive optics for spectral control of the supercontinuum generated in sapphire with femtosecond pulses

Carolina Romero, Rocío Borrego-Varillas, Acner Camino, Gladys Mínguez-Vega, Omel Mendoza-Yero, Juan Hernández-Toro, and Javier R. Vázquez de Aldana  »View Author Affiliations

Optics Express, Vol. 19, Issue 6, pp. 4977-4984 (2011)

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We propose the use of kinoform diffractive lenses to focus near infrared femtosecond pulses in sapphire crystals for supercontinuum generation. It is shown that a strongly peaked structure appears in the blue region of the supercontinuum spectra. The central wavelength of this peak can be easily controlled by simply changing the lens-crystal distance. Moreover, when compared with the supercontinuum generated with a refractive lens in analogous conditions, the spectral extension of the so-generated continuum is larger. Our results were corroborated for sapphire plates with different thicknesses as well as in other transparent dielectrics such as fused silica.

© 2011 OSA

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

Original Manuscript: January 20, 2011
Revised Manuscript: February 16, 2011
Manuscript Accepted: February 18, 2011
Published: March 1, 2011

Carolina Romero, Rocío Borrego-Varillas, Acner Camino, Gladys Mínguez-Vega, Omel Mendoza-Yero, Juan Hernández-Toro, and Javier R. Vázquez de Aldana, "Diffractive optics for spectral control of the supercontinuum generated in sapphire with femtosecond pulses," Opt. Express 19, 4977-4984 (2011)

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