Question

101. The 2005 Nobel Prize in Physics was given, in part, to scientists who had made ultrashort pulses of light. These pulses are im- portant in making measurements involving very short time periods. One challenge in making such pulses is the uncertain ty principle, which can be stated with respect to energy and time as AE. Ath/4. What is the energy uncertainty (AE) associated with a short pulse of laser light that lasts for only 5.0 femtoseconds (fs)? Suppose the low-energy end of the pulse had a wavelength of 722 nm. What is the wavelength of the high-energy end of the pulse that is limited only by the uncertainty principle?