Volume 55, Issue 07 | Laser Focus World

Laser Focus World Volume 55, Issue 07

Volume 55, Issue 07

Laser Focus World Volume 55, Issue 08

Laser Focus World Volume 55, Issue 07

Laser Focus World Volume 55, Issue 06

Laser Focus World Volume 55, Issue 05

Laser Focus World Volume 55, Issue 04

Laser Focus World Volume 55, Issue 03

Laser Focus World Volume 55,

Laser Focus World Volume 55, Issue 02

Laser Focus World Volume 55, Issue 01

Content from Volume 55, Issue 07

On-chip laser-based quantum device generates true random numbers

Mid-IR spectroscopy monitors UV-curable adhesive dynamics

FIGURE 1. A spectral transmission curve for a high-LIDT polarizing beamsplitter (PBS) cube made by Thorlabs designed for use at 532 nm has a high polarization selectivity. A similar cube designed for use at 1064 nm is shown in the inset.

Optical Coatings: Coatings for laser optics achieve high LIDT

Fiber sensing

FIGURE 1. In a schematic of the X-LSQ150B linear stage, measurements are made relative to the reference position indicated between the stage base and the motor.

Photonics Motion Control: Operational strategies mitigate thermal expansion effects on linear positioning systems

Doughnut-shaped intensity point spread functions (IPSFs) are compared before (a) and after (c) application of a machine-learning-based adaptive-optic (AO) correction; the IPSF profiles (b, d) along lines I and II are also charted before (blue) and after (magenta) correction.

Machine-learning-based adaptive optics maintain doughnut-shaped beams in scattering media

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Metasurface lens on diamond single-photon quantum source efficiently collects photons

FIGURE 1. A real laser beam will have a divergence angle (θR) greater than that of an ideal Gaussian beam (θG); the beam’s wavefront is planar in the near field near the beam waist and curved in the far field.

Laser Beam Quality: Beam propagation and quality factors: A primer

To create a gold grating on a nanowire array (a), the nanowires themselves (vertical projections) were used as shadow masks by depositing the gold at an angle to the surface, resulting in undeposited areas (dark regions). Future nanowire-based separate absorption and multiplication avalanche photodiodes (SAM-APDs) will have faceted nanowires to help relieve lattice-mismatch strain (b).

Short- and mid-wavelength infrared nanowire photodiodes are uncooled

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Fiber laser delivers 1300 and 1700 nm light simultaneously for three-photon microscopy