Is Wavelength Doubling Laser a Real Technique?

  • Context: Undergrad 
  • Thread starter Thread starter sparkle_pony
  • Start date Start date
  • Tags Tags
    Laser Wavelength
Click For Summary
SUMMARY

Wavelength doubling is not a recognized technique; the correct term is frequency doubling, which effectively halves the wavelength of light. This process is commonly utilized in green laser pointers through second harmonic generation. The discussion highlights parametric down conversion as the inverse process of frequency doubling. For further understanding, resources such as RP Photonics and Wikipedia provide detailed explanations of these concepts.

PREREQUISITES
  • Understanding of frequency doubling and second harmonic generation
  • Familiarity with laser technology and its applications
  • Knowledge of parametric down conversion
  • Basic principles of optics and light behavior
NEXT STEPS
  • Research the principles of frequency doubling in laser technology
  • Explore the applications of second harmonic generation in various lasers
  • Study parametric down conversion and its uses in quantum optics
  • Investigate the efficiency metrics of frequency doubling processes
USEFUL FOR

Optical engineers, physicists, and anyone involved in laser technology or photonics will benefit from this discussion.

sparkle_pony
Messages
24
Reaction score
0
I've heard of frequency doubling but is wavelength doubling a thing? If so, how efficient?
 
Science news on Phys.org
Frequency doubling divides the wavelength in half: http://www.rp-photonics.com/frequency_doubling.html

The inverse process also works, and is usually called parametric down conversion:
http://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion

Your green laser pointer is an example of frequency doubling/second harmonic generation:
http://en.wikipedia.org/wiki/Laser_pointer#Green
See the schematic diagram on the right hand side - enlarge, and follow the red beam into the crystal which generates the green beam.
 

Similar threads

High School Wavelength of a laser beam emerging from a prism
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Grating Resolving Power of Laser Beams with Gaussian Distribution
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Understanding Laser Safety Glasses: Wavelengths, Frequency, and Protection
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad Laser and nano-holes experiment
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Understanding Waveform & Autocorrelation in Pulse Lasers
  • · Replies 2 ·
Replies
2
Views
10K
Undergrad How Can I Expand and Collimate a Laser Pointer Beam Using Basic Optics?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Laser frequency doubling range for nonlinear crystals
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Does speed of light depend on the wavelength or frequency of it?
  • · Replies 2 ·
Replies
2
Views
3K
High School Highway: Deriving speed from Doppler shift
  • · Replies 20 ·
Replies
20
Views
2K
How does laser hair removal work?
  • · Replies 18 ·
Replies
18
Views
4K