Chlorophyll fluorescence from a violet laser pointer (updated)

A friend with a 405 nm laser pointer noted that if it is pointed at some plant matter like a spinach leaf then there is a reddish fluorescence (that can be a challenge to photograph).  Algae-laden water probably works best for showing this.  I'm guessing it is from the chlorophyll (see Figure 3 in http://icecube.berkeley.edu/~bramall/work/astrobiology/fluorescence.htm). NASA is using the fluorescent activity of chlorophyll to map photosynthesis on the Earth, see: http://www.space.com/22111-satellites-capture-photosynthesis-in-action-video.html