Modulated laser effect on plants

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The discussion centers on the use of pulsed lasers to stimulate plant growth, particularly focusing on low-frequency pulsing between 5Hz and 20KHz. Participants emphasize the importance of wavelength, noting that chlorophyll absorption peaks around 425nm for chlorophyll a and 460nm for chlorophyll b, suggesting that lasers in the blue spectrum would be most effective for photosynthesis. There is uncertainty regarding the effects of pulsed light, as no specific studies on this topic are mentioned. One participant points out that ordinary fluorescent lighting operates at 60Hz, but there is no evidence of unique benefits from pulsing compared to continuous illumination. Overall, while there is interest in the potential of pulsed laser technology for plant growth, concrete studies and mechanisms remain unclear.
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I'm interested in anything you have...links...sugestions...ideas about this field...
 
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Can you be a bit more specific in your question? What wavelength or power? Otherwise, the answer could range from absolutely nothing, to stimulation of a particular set of photopigments, to burning a hole through it.
 
Well...I'm interested in the stimulation of growth of plants...especially if there are any studies about pulsed lasers at low frequency ( 5Hz-20KHz ), with wavelengths that stimulate photosynthesis ...the wavelength doesn't matter too much...I just want pulsed lasers that stimulate plants to grow :-P
 
The wavelength matters a lot - The absorption spectrum of chlorophyll
would indicate that for max effect you would want the wavelength probably centered in somewhere in the "blues" circa

chlorophyll a : 425nm
chlorophyll b : 460nm

unless you have a "sunlight balanced" laser light source

I don't know of any studies on the effect of pusled light, so I can't comment about that.
 
What mechanisim do you think would be affected by either coherency or pulsing?

Ordinary florescent lighing pulses at 60Hz, even though you don't see it.
I don't know of any particular effects associated with that, given equivilent applied illumination.
 

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