Boosting Light Energy: Increasing Amplitude Without Changing Frequency

In summary, light with higher frequencies has higher energy photons. However, the energy of a single photon is determined by its wavelength or frequency, and amplitude cannot be increased without increasing the number of photons. Frequency doubling or second-harmonic generation is a commonly-used technique to increase the energy and change the color of light. It involves placing a special crystal in a laser beam at a specific angle. Other materials, such as organic polymers, are being developed for this purpose. Additionally, stimulated emission and lasers can also be used to amplify light without changing its frequency.
  • #1
big prairie
14
0
-Light with higher frequencies has higher energy photons.

Can the energy in light be increased by increased amplitude without increasing frequency?

How can amplitude be increased without increasing frequency?

- By photons traveling in phasae creating a constructive interpherence?
 
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  • #2
Light isn't really a wave in that sense - the wave picture is just an anology.

Think of a police car going past with a flashing light. If you drew a graph of brightness against position it would have a wavelength and a frequency but it it isn't a wave.

The energy of an individual photon is set only be the wavelength or freqeuncy. The brightness or intensity is set by the number of photons.
 
  • #3
big prairie said:
-Light with higher frequencies has higher energy photons.

Can the energy in light be increased by increased amplitude without increasing frequency?

How can amplitude be increased without increasing frequency?

- By photons traveling in phasae creating a constructive interpherence?

I'm trying to find out the answer myself. I don't think light can do constructive interferance like normal wave. It's like double intensity instead of double amplitude.
 
  • #4
As was said, amplitude is not a changeable aspect of an individual photon rather it is with respect to the amount of photons. Think of it this way... amplitude is only increased by increasing the actual amount of photons.
 
  • #5
Yes, but in some perspective, we interest in high energy single photon and not many photons of lower energy. But like you say, it can't... or we just don't know how. However, if we keep bombarting a surface with same energy photon, we will get a higher and higher temperature (ignoring heat lost). Am I right? If that's the case, we can make higher energy photon using that tempeature?
 
  • #6
This is obviously a homework question of the type to "make students think for themselves", that fails miserably.
 
  • #7
This may be of some interest to you...

"One of the most commonly-used frequency-mixing processes is frequency doubling or second-harmonic generation. With this technique, the 1064-nm output from Nd:YAG lasers or the 800-nm output from Ti:sapphire lasers can be converted to visible light, with wavelengths of 532 nm (green) or 400 nm (violet), respectively.

Practically, frequency-doubling is carried out by placing a special crystal in a laser beam under a well-chosen angle. Commonly-used crystals are BBO (β-barium borate), KDP (potassium dihydrogen phosphate), KTP (potassium titanyl phosphate), and lithium niobate. These crystals have the necessary properties of being strongly birefringent (necessary to obtain phase matching, see below), having a specific crystal symmetry and of course being transparent for and resistant against the high-intensity laser light. However, organic polymeric materials are set to take over from crystals as they are cheaper to make, have lower drive voltages and superior performance."

From: http://en.wikipedia.org/wiki/Nonlinear_optics
 
  • #8
I believe that the attached immage is showing light refracting to cause constructive interference.
 

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  • #9
You might look up stimulated emission, and lasers, to find out about Light Amplification. It's possible, and frequency is not changed.
 

1. How can light energy be boosted without changing its frequency?

One way to increase the amplitude of light energy without changing its frequency is by using a device called a laser amplifier. This device amplifies the intensity of the light beam without changing its wavelength or frequency.

2. What is the purpose of boosting light energy?

Boosting light energy can be useful in various fields such as telecommunications, medical imaging, and scientific research. It allows for higher resolution images and more precise measurements to be made.

3. Is it possible to boost light energy indefinitely?

No, it is not possible to boost light energy indefinitely. There are limitations to how much light energy can be amplified without causing damage to the equipment or altering the properties of the light itself.

4. Are there any side effects of boosting light energy?

Boosting light energy can have some potential side effects, such as producing excessive heat or causing unwanted interactions with other materials. It is important to carefully control and monitor the amplification process to minimize these effects.

5. Can boosting light energy change the color of the light?

No, boosting light energy does not change the color of the light. The color, or wavelength, of light is determined by its frequency, and amplifying the light energy does not affect the frequency.

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