Attonics Systems ATTO3 Manuel utilisateur

ATTO3Manual 1.6

ATTO3 Spectrometer

Atto3 Manual 1.6

Jun 2020

Disclaimer:

By using this product, you agree to the terms and conditions of the non-disclosure agreement

(NDA), and further to the lending agreement or to the license agreement or to the general

T&Cs of sales.

Attonics Systems reserves the right to make changes, corrections, modifications or

improvements, to this document, and the products and services described herein at any time,

without notice.

Limit of Liability

Every effort has been made to make this manual as complete and as accurate as possible,

but no warranty or fitness is implied. The information provided is on an “as is” basis. Attonics

Systems assumes no liability whatsoever relating to the use of product by you or third parties.

ATTO3Manual 1.6 
2 
 
 
Table of Contents 
TABLE OF CONTENTS ................................................................................................................2 
MANUAL REVISION HISTORY ....................................................................................................3 
WHAT’S INSIDE THE BOX...........................................................................................................4 
BEFORE YOU START ..................................................................................................................4 
CAUTION.......................................................................................................................................4 
DEVICE FEATURES .....................................................................................................................5 
TECHNICAL SPECS .....................................................................................................................6 
QUICK STARTUP GUIDE .............................................................................................................7 
GENERAL INTRODUCTION.........................................................................................................9 
SPECTROSCOPY INTRODUCTION ..........................................................................................11 
WHAT IS SPECTROSCOPY? ........................................................................................................11 
SOFTWARE DESCRIPTION.......................................................................................................14 
ATTOVIEW SOFTWARE MAIN SCREEN ........................................................................................14 
SOFTWARE FEATURES ............................................................................................................15 
ACQUISITION MODES.................................................................................................................15 
SPECTROMETER CONTROLS : ....................................................................................................15 
INDICATOR BAR.........................................................................................................................16 
SAVING DATA............................................................................................................................17 
SPECTRAL PROCESSING.........................................................................................................17 
COLLECT DARK,REFERENCE AND BRIGHT SPECTRUM ................................................................17 
SPECTRAL VIEW MODES............................................................................................................18 
SPECTRAL PROCESSING............................................................................................................18 
OTHER FEATURES ....................................................................................................................18 
PLOTTING FEATURES ................................................................................................................18 
APPLICATIONS...........................................................................................................................19 
ILLUMINATION CONTROL ............................................................................................................20 
APP 1: COLORIMETRY..............................................................................................................21 
STANDARD PROCEDURE ............................................................................................................21 
APP 2: TIME SERIES..................................................................................................................23 
STANDARD PROCEDURE ............................................................................................................23 
APP 3: RECORDING ..................................................................................................................24 
STANDARD PROCEDURE ............................................................................................................24 
APPENDIX NOTES .....................................................................................................................25 
AN1. CHOOSING THE CORRECT WHITE STANDARD FOR COLORIMETRY .........................................25 
TROUBLESHOOTING ................................................................................................................26 
 

ATTO3Manual 1.6

Manual Revision History

Ver

Release Date

Notes

Affected Sections

1.0

08/07/2019

First Formal Release

1.3

04/11/2019

Updated Software look and

feel and added technical

notes

1.4

04/12/2019

Added new software

features, application notes

1.5

12/03/2020

Added White lid

referencing procedure to

the appendix AN1.

1.6

2/6/2020

Added the section for

App3: Recording

ATTO3Manual 1.6

What’s Inside the Box

Attonics Spectrometer

USB3.0 interface cable

Flash drive

Before you start

Hardware Requirements

CPU

Intel Core 2 Duo or higher

RAM

4 GB or higher

Hard Drive

Space

1 GB for the software

USB Port

USB 3.0 port(preferred)

USB 2.0 port compatible

Software Requirements

Operating System

Windows 10

Caution

Mechanical Shock

This product is sensitive to mechanical

shock, improper handling can cause

permanent damage to the product. Do

not handle or expose to shock while

product is in operation. Handle with great

care.

Heat Build-up

It is recommended to disconnect the

device when not in use. The electronic

components inside may cause a heat

build-up inadvertently leading to partial

damage or failure.

Install Software before Connecting

Be sure to install the software BEFORE

connecting the spectrometer to your PC.

The software installs the drivers required

for spectrometer installation. If you do

not install the software first, the computer

will not properly recognize the

spectrometer.

Safety from dirt and liquid

To ensure the optimal performance of

the device, please ensure that no solids

or liquids enter. the spectrometer

through the input port.

Active Illumination based Devices

Beware of the illumination light sources

at the entrance of the spectrometer. The

light sources are very bright for normal

viewing and should not be directly

viewed at any point of time. Bright light

exposure can cause temporary

blindness.

ATTO3Manual 1.6

Device Features

Figure 2.

1. Reference

Standard / Safety

Cover

2. Female USB 3.0

Micro B port

3. Tripod Socket

4. LED Indicator

5. Snap Button

6. Spectrometer

Entrance Port

ATTO3Manual 1.6

Technical Specs

Wavelength Range

380 nm –1020 nm

Peak Repeatability

< 1 nm

FWHM

12 nm (customisable to 2 nm)

SNR

> 1000:1

Dynamic Range

12 bit

Integration Time

10 µs to 1 s

Numerical Aperture

0.3 *

Measurement Speed

50 frames per sec*

LED*

White High CRI LED

UV LED(398 nm),

Supply Voltage

5 V, USB based connection

Power Consumption

0.4 W (CMOS)

0.1 to 1 W (LEDs) *

Operation Temperature

–30°C to +70°C

Size / Dimensions

32 mm x 32 mm x 64 mm

* based on configuration, customisable

ATTO3Manual 1.6

Quick Startup Guide

Install the software located inside the flash-drive provided by Attonics.

Run the attonicssetup1.X.X.exe using administrator privileges. Password for the

setup is “atto3”. In case of an error during auto-launch of Attoview.exe, please

ignore and open it manually from the installed location.

Tip: check the check box - place a shortcut on desktop

Launch the Attonics software AttoView.

Locate the USB cable provided with the spectrometer. Connect the USB type-A end

to the computer and USB type-micro B end to the Attonics spectrometer.

The software detects the device as soon as it is connected.

Once it is connected, all the features based on the spectrometer are activated.

You can capture the spectrum in the following modes:

1. Acquire Live

2. Acquire a Snap

3. Acquire Snap using HW trigger

Place your spectrometer bottom side up looking at any ceiling light. Click Snap

icon to get a single shot spectrum of the light source.

If you see a spectrum in the spectral window, you have now been initiated into the

black magic of spectroscopy. You are welcome! Go ahead and explore all the

features to make full use of our spectrometer.

Typical spectrum recorded by our spectrometer for a fluorescence lamp

ATTO3Manual 1.6

General Introduction

Attonics Systems is disrupting the field of spectroscopy. Our innovative spectrometers are

based on a novel interferometer design that allows the spectrometer to be as compact as

possible yet comparable to a lab grade spectrometer. Our patented manufacturing technique

enables a new platform for spectroscopy based on interferometry instead of conventional

gratings. By realizing a spectrometer conveniently held within your palm and yet have

research grade precision is a revolution. Our compact, rugged spectrometers are easily

adaptable to any existing optical setup for spectral monitoring.

Unique Features

•Compact Size

•Low Cost

•Interferometer based sensor: High resolution, high throughput as opposed to high

resolution low throughput for grating based spectrometers

•Wide range spanning the entire CMOS range (380-1020)

•1 nm repeatability

•12 nm FWHM (customizable down to 2 nm)

Cost effectiveness and compactness

High resolution and lab grade spectrometers and spectrophotometers are expensive with a

price tag in excess of US$ 20k and difficult to maintain. The cost for using spectrometers as

detectors is, therefore, cost-prohibitive and many applications can’t afford precise spectral

monitoring. We overcome the cost disadvantage while providing high spectral resolution for

process monitoring. The dimensions of the active device are 32 x 32 x 66 mm3 making it

ultra-compact and suitable for applications hitherto impossible. Compact size means it can

be easily adapted to any viewport.

(a)

(b)

Fig. 1: a) Schematic of a grating spectrometer dispersing a collimated beam of light

impinging on the grating into its spectral components. A detector downstream the grating

reads the individual wavelengths as a function of angle or location. Spectral separation

depends on collimation, dispersion and distance from the grating. b) Schematic of the

Attonics Systems interferometer. A collimated beam of light transmits through a 3-

dimensionally structured micro/nano textured surface. Light rays interfere and form a unique

fringe pattern on an array detector in proximity. The forming fringe pattern are

mathematically translated into spectral information. Spectral separation depends on the

maximum phase delay generated in the textured surface.

ATTO3Manual 1.6

(a)

(b)

Fig. 2: a) Typical interference pattern for oxygen plasma, b) Spectra computed from the

interference pattern. The oxygen plasma is maintained with a 20 SCCM gas flowrate at a

pressure of 150 mTorr and 100 W RF Power. The inset of the figure shows a magnified view

of oxygen emission lines in the spectral band ranging from 750 to 890 nm.

Interference vs Dispersion

Contrary to conventional UV-VIS spectrometers which rely on the dispersion of a collimated

beam of electromagnetic radiation into its spectral elements by a high precision, finely ruled

and costly grating, we utilize a static array of unique interferometer channels producing a

distinctive wavelength dependent interference pattern on a detector array (Fig. 1). Each

interference pattern is unique to a given wavelength and can be mathematically translated

into spectral information. Fig. 2(a) demonstrates a typical interference pattern recorded by

our spectrometer capturing the oxygen plasma emission.

Unlike the dispersion of light e.g. by a grating (requiring a wave to travel comparably long

distances until it separates into spectral components), the interference allows us to

construct extremely compact spectral solutions thereby saving cost and space.

Furthermore, our interferometer array allows large field of views while offering the

multiplexing advantage known for conventional Fourier transform interferometers.

The interferometer chip is placed in front of a CCD or CMOS array detector into a collimated

beam of light coming from the plasma source. In its essence, our interferometer chip

converts a standard monochrome camera into a spectrometer engine. The spectral working

band of the camera thereby determines the spectral bandwidth of the device. Its spectral

resolution is tailored by the design of the chip and mainly governed by the maximum optical

path difference generated in the interference structure of the chip. In the current device, the

peak full-width-half-maximum is 12 nm. Its spectral bandwidth is determined by the

sensitivity curve of the CMOS detector and ranges from 380 nm to 1000 nm whereby our

chip enables a 1 nm wavelength interval throughout. Neither order sorting filters nor long

collimators are required further reducing the complexity of the optical system to a bare

minimum.

400 500 600 700 800 900 1000

Wavelength (nm)

Intensity (a.u.)

10-3

750 770 790 810 830 850 870 890

842

776.4

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