Abstract

We study propagation of short laser pulses through water and use a spectral hole filling technique to essentially perform a sensitive balanced comparison of absorption coefficients for pulses of different duration. This study is motivated by an alleged violation of the Bouguer–Lambert–Beer law at low light intensities, where the pulse propagation is expected to be linear, and by a possible observation of femtosecond optical precursors in water. We find that at low intensities, absorption of laser light is determined solely by its spectrum and does not directly depend on the pulse duration, in agreement with our earlier work and in contradiction to some work of others. However, as the laser fluence is increased, interaction of light with water becomes nonlinear, causing energy exchange among the pulse’s spectral components and resulting in peak-intensity dependent (and therefore pulse-duration dependent) transmission. For 30fs pulses at 800nm center wavelength, we determine the onset of nonlinear propagation effects to occur at a peak value of about 0.12mJ/cm2 of input laser energy fluence.

© 2010 Optical Society of America

Full Article  |  PDF Article
Related Articles
Brillouin precursor propagation in the THz region in Lorentz media

Xiaohui Ni and R. R. Alfano
Opt. Express 14(9) 4188-4194 (2006)

Brillouin precursor propagation in the THz region in Lorentz media

Xiaohui Ni and R. R. Alfano
Opt. Express 14(9) 4189-4195 (2006)

Absorption of ultrashort optical pulses in water

Yoshitomo Okawachi, Aaron D. Slepkov, Imad H. Agha, David F. Geraghty, and Alexander L. Gaeta
J. Opt. Soc. Am. A 24(10) 3343-3347 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription