Coherent FieldMaxII-TOP Dokumentacja Pobierz pdf (Strona 58)

Superior Reliability & Performance • www.Coherent.com • LMC.sales@coherent.com

In today’s fast-paced photonics market it is important to understand the technical specications of highly complex laser

systems and their applications. As well as analyzing the power or energy, it is also useful to understand the shape, intensity

prole, and propagation of a laser beam. For over 25 years Coherent has developed precision instruments that measure,

characterize, and monitor these laser parameters for thousand of customers around the world.

Beam Prolers

As a laser beam propagates, changes in the laser cavity, as

well as changes in divergence and interactions with optical

elements, cause the width and spatial intensity of the beam

to change in space and time. Spatial intensity distribution is

a fundamental parameter for indicating how a laser

beam will behave in any application. And while theory can

sometimes predict the behavior of a beam, tolerance ranges

in mirrors and lenses, as well as ambient conditions affecting

the laser cavity and beam delivery system, necessitate

verication.

Two types of beam prolers are available: those that use

special cameras as the beam detectors (these are excellent

for fast and detailed analyses of the intensity prole of

pulsed and CW lasers); and systems that use moving knife-

edges (these have a large dynamic range and can accurately

measure small and focused beams). Coherent has both

of these types available: the camera-based BeamView

Analyzer on page 62 and an advanced knife-edge system—

BeamMaster—on page 71.

Beam Propagation

The Coherent ModeMaster beam propagation analyzer

established an entirely new laser beam quality parameter

that is now an ISO standard. M

is recognized as describing

both how “close-to-perfect Gaussian” a beam is, and also

how well the beam can be focused at its intended target.

Wavelength Meter

For many high performance tunable laser systems, or those

using laser diodes, it is important to measure the wavelength.

The WaveMaster laser wavelength meter accurately

measures the wavelength of both CW and pulsed lasers of

any repetition rate to an accuracy of 5 picometers. See page

80 for additional specications for the WaveMaster.

Laser

Cross-

Reference

Index

POWER

& ENERGY

Power

Sensors

Energy

Sensors

Custom

& OEM

BEAM

DIAGNOSTICS

CALIBRATION

& SERVICE

INDICES

Product

Name

Index

Power

& Energy

Meters

Introduction to Laser Beam Diagnostics

Beam Diagnostics Introduction

Model BeamView Analyzer BeamMaster ModeMaster WaveMaster

Wavelength – – – CW + Pulsed

Power / Energy – CW – –

Beam Position CW + Pulsed CW CW –

Propagation M

– – CW –

Beam Proles

2D CW + Pulsed CW CW –

3D CW + Pulsed CW – –

Page Number 62 71 74 80

Summary of

Product Primary

Measurement

Capabilities

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 91 92

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