# Simple precision measurements of optical beam sizes.

@article{Mylonakis2018SimplePM, title={Simple precision measurements of optical beam sizes.}, author={Mikis Mylonakis and Saurabh Pandey and Kostas G. Mavrakis and Giannis Drougakis and Georgios Vasilakis and Dimitris G. Papazoglou and Wolf von Klitzing}, journal={Applied optics}, year={2018}, volume={57 33}, pages={ 9863-9867 } }

We present a simple high-precision method to quickly and accurately measure the diameters of Gaussian beams, Airy spots, and central peaks of Bessel beams ranging from sub-millimeter to many centimeters without specialized equipment. By simply moving a wire through the beam and recording the relative losses using an optical power meter, one can easily measure the beam diameters with a precision of 1%. The accuracy of this method has been experimentally verified for Gaussian beams down to the…

## 7 Citations

### Equations for beam waist measurement of high peak power lasers

- PhysicsJournal of Nonlinear Optical Physics & Materials
- 2019

We have derived a set of equations for beam waist at lens focus as a function of variable spot size and demonstrated their physical validity. The derived equations are useful for the estimation of…

### Laser spot measurement using simple devices

- PhysicsAIP Advances
- 2021

We have designed and tested an automated simple setup for quickly measuring the profile and spot size of a Gaussian laser beam using three cost-affordable light sensors. Two profiling techniques were…

### Stable and precise optical bench for space applications

- PhysicsInternational Conference on Space Optics
- 2021

We report a novel Optical Beam Steering Technique (OBST) for fiber to free-space to fiber coupling with extreme stability of the coupling efficiency and high tolerance to temperature fluctuations.…

### Simple and robust method for determination of laser fluence thresholds for material modifications: an extension of Liu’s approach to imperfect beams

- PhysicsOpen Research Europe
- 2021

The bias corrections required when applying the D-squared method to Airy-disk like profiles are rigorously calculated and give a robust solution for exact threshold determination without any added technical complications as for instance advanced control or metrology of the beam.

### Simple and robust method for determination of laser fluence thresholds for material modifications: an extension of Liu’s approach to imperfect beams [version 2; peer review: 2 approved, 1 approved with reservations]

- Physics
- 2021

The so-called D-squared or Liu’s method is an extensively applied approach to determine the irradiation fluence thresholds for laserinduced damage or modification of materials. However, one of the…

### Simple and robust method for determination of laser fluence thresholds for material modifications: an extension of Liu’s approach to imperfect beams [version 1; peer review: 1 approved, 2 approved with reservations]

- Physics
- 2021

The so-called D-squared or Liu’s method is an extensively applied approach to determine the irradiation fluence thresholds for laserinduced damage or modification of materials. However, one of the…

### Dielectric-based Components and Methods for Terahertz Sensing

- Physics
- 2020

.......................................................................................................... iv RESUMEN…

## References

SHOWING 1-10 OF 14 REFERENCES

### Measurement of submicron laser beam radii.

- PhysicsApplied optics
- 1981

Three methods for direct measurement of the intensity distribution in laser beams focused by microscope optics to waists of submicron width are described and compared. They use scans of the beam…

### Measuring a narrow Bessel beam spot by scanning a charge-coupled device (CCD) pixel

- Physics
- 2010

By scanning a charge-coupled device (CCD) camera transverse to the beam axis and observing the variation in counts on a marked pixel, we demonstrate that we can measure a laser beam spot size smaller…

### Measurement of the diameter of a laser beam

- Physics
- 1978

A new and simple technique for measuring the effective diameter of a laser beam used in material processing is described. The time for the temperature of a spot heated by the laser beam to rise to…

### Method for measuring the spot size of a laser beam using a boundary-diffraction wave.

- PhysicsOptics letters
- 1987

The spot size of a He-Ne laser beam has been measured to be 8.3 microm by using a Si3N4 straight pattern; this value is compared with 8.9 microm obtained by the knife-edge method.

### Two methods for measuring laser beam diameter

- Medicine
- 2010

Two methods for measuring beam diameter are described with the derivation of the equations that make them valid and the equations from basic science and mathematics are derived to clarify the underlying concepts of the methods.

### Measurement of a Gaussian laser beam diameter through the direct inversion of knife-edge data.

- PhysicsApplied optics
- 1983

An inversion algorithm, involving a linear least-squares method, is developed to analyze the intensity data obtained by application of the traveling knife-edge method, and diameters can be measured to an accuracy of 0.05%.

### Measuring Gaussian laser beam diameter using piezoelectric detection

- Physics
- 1993

A simple method is described to measure a Gaussian laser beam diameter using piezoelectric detection. Scanning the beam with a single-edge razor blade and monitoring the transmitted beam with a PZT…

### Measurement of the microm sized radius of Gaussian laser beam using the scanning knife-edge.

- PhysicsApplied optics
- 1975

where co is the angular velocity of the chopper, r the distance from the rotating center to the laser beam axis, and t2-t, the time interval for a variation of P(x)/P0 from 0.9 to 0.1. Figure 1 shows…