High speed determination of laser wavelength using Poincaré descriptors of speckle

@article{ODonnell2019HighSD,
  title={High speed determination of laser wavelength using Poincar{\'e} descriptors of speckle},
  author={Laura O'Donnell and Kishan Dholakia and Graham D. Bruce},
  journal={Optics Communications},
  year={2019}
}

Figures from this paper

Femtometer-resolved simultaneous measurement of multiple laser wavelengths in a speckle wavemeter.

The method offers a viable way to measure sparse spectra containing multiple individual lines and may find application in the tracking of multiple lasers in fields such as quantum technologies and optical telecommunications.

Wavelength sensitivity of the speckle patterns produced by an integrating sphere

Speckle metrology is a powerful tool in the measurement of wavelength and spectra. Recently, speckle produced by multiple reflections inside an integrating sphere has been proposed and showed high

Speckle-based determination of the polarisation state of single and multiple laser beams

Laser speckle is generated by the multiple interference of light through a disordered medium. Here we study the premise that the speckle pattern retains information about the polarisation state of

Deep Learning Enabled Laser Speckle Wavemeter with a High Dynamic Range

Deep learning is an ideal approach to analyse wavelength variations using a speckle wavemeter due to its ability to identify trends and overcome low signal to noise ratio in complex datasets, which enables wavelength measurement at high resolution and over a broad operating range in a single step.

Measurement of Variations in Gas Refractive Index with 10–9 Resolution Using Laser Speckle

Highly resolved determination of refractive index is vital in fields ranging from biosensing through to laser range finding. Laser speckle is known to be a sensitive probe of the properties of the

Review on Speckle-Based Spectrum Analyzer

Accurate spectral measurement and wavelength determination are fundamental and vital for many fields. A compact spectrum analyzer with high performance is expected to meet the growing requirements,

Wavemeter Capable of Simultaneously Achieving Ultra-High Resolution and Broad Bandwidth by Using Rayleigh Speckle From Single Mode Fiber

Rayleigh speckle with random jagged pattern resulting from the interference of Rayleigh backscattering lightwave in a single-mode fiber contains the wavelength information of the incident lightwave.

References

SHOWING 1-10 OF 37 REFERENCES

Femtometer-resolved simultaneous measurement of multiple laser wavelengths in a speckle wavemeter.

The method offers a viable way to measure sparse spectra containing multiple individual lines and may find application in the tracking of multiple lasers in fields such as quantum technologies and optical telecommunications.

Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution.

A compact wavemeter is demonstrated that measures attometer-scale wavelength changes of a stabilized diode laser, eight orders of magnitude below the speckle correlation limit.

Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization

This work uses a fibre-coupled integrating sphere to generate wavelength-dependent speckle patterns, in combination with algorithms based on the transmission matrix method and principal component analysis, to realize a broadband and sensitive wavemeter that compares favourably to the performance of conventional wavemeters.

Determination of laser beam focus position based on secondary speckles pattern analysis.

This contribution presents a simple optical method based on the secondary speckles pattern analysis suitable for determination of the absolute focal spot position that does not require any a priori knowledge of the laser beam properties and is suitable for various diffuse or partially diffuse surfaces of interest.

The dynamic speckle-based wavemeter

Based on a previously devised speckle-based set-up for probing minute wavelength changes for a coherent field [1], [2] we will here present the first experiments where these changes are resolved on a

Deep Learning Enabled Laser Speckle Wavemeter with a High Dynamic Range

Deep learning is an ideal approach to analyse wavelength variations using a speckle wavemeter due to its ability to identify trends and overcome low signal to noise ratio in complex datasets, which enables wavelength measurement at high resolution and over a broad operating range in a single step.

Generation of laser speckle with an integrating sphere

A new method for generation of laser speckle, by using an integrating sphere, is investigated. This method is of particular interest in the production of speckle patterns for modulation transfer

Random super-prism wavelength meter.

A method that uses a thin random scattering medium to measure the wavelength of a near-infrared laser beam with picometer resolution is developed, based on the application of principal component analysis, which is used for pattern recognition and is applied here to the case of speckle pattern categorization.

Laser speckle contrast imaging: theoretical and practical limitations

LSCI is used primarily to map flow systems, especially blood flow, and its limitations and problems are investigated.

Laser frequency stabilization using a commercial wavelength meter.

The wavemeter-based frequency stabilization scheme can be applied to a wide range of atoms and molecules for laser spectroscopy, cooling, and trapping, and provides excellent stability in single-channel operation.