Related Experiment Video
Updated: Jun 16, 2026

Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
Abstract:
An analytical development is presented for on-axis far-field irradiance in terms of an optical system that specifies a laser beam quality, an optical train with both linear and nonlinear phase aberrations (power driven), and a focusing telescope with jitter. It was found that the far-field intensity does not increase linearly with laser power, in fact it turns over and decreases as nonlinear, power-driven aberrations begin to dominate. The same phenomena causes the wavelength scaling to be less than 1/lambda(2) (with decreasing wave-length) for far-field irradiance.
More Related Videos
Related Concept Videos
Accuracy, limits, and approximation
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
Imaging Biological Samples with Optical Microscopy
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Linear Approximation in Time Domain
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length, the...
Focusing of Light in the Eye
Linear Approximations
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
According to Hooke's law, the vibrational frequency is directly proportional to the...

