New Focus Vidia-Discrete 64 7 Series Manuel utilisateur

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USER’S GUIDE

Vidia-Discrete

External-Cavity Tunable Diode Lasers

Model Series 64X7

U.S. Patent #5,319,668 & Other Patents Pending

Use of controls or adjustments, or performance of procedures

other than those speciﬁed herein, may result in hazardous

radiation exposure.

5215 Hellyer Ave. • San Jose, CA 95138-1001 • USA

phone: (408) 284–6808 • fax: (408) 284–4824

e-mail: contact@newfocus.com • www.newfocus.com

™

64X7 rev E.fm Page 1 Tuesday, April 3, 2001 4:16 PM

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Warranty

New Focus, Inc. guarantees its lasers to be free of material and workmanship defects for one year

from the date of shipment. This warranty is in lieu of all other guarantees expressed or implied and

does not cover incidental or consequential loss.

Products described in this document are covered by U.S. Patent #5,319,668 and patents pending.

Information in this document is subject to change without notice.

The symbol and NEW FOCUS, Inc. are registered trademarks and Vidia and Vidia-

Discrete are trademarks of New Focus, Inc. Littelfuse and Slo-Blo are registered trademarks of

Littelfuse, Inc.

Document Number 640054 Rev. E

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Vidia-Discrete Contents • 3

Contents

User Safety 5

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Laser Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Using the Safety Interlock . . . . . . . . . . . . . . . . . . . . . . . . . 7

Getting Started 9

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Unpacking the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setting Up the Laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Starting the Laser for the First Time . . . . . . . . . . . . . . .10

General Operation 13

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

What’s Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Using the Front-Panel Controls . . . . . . . . . . . . . . . . . . .14

Control Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Back Panel and Laser-Cavity Connections. . . . . . . . . .17

Turning on the Power . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Enabling Local (Front-Panel) Control . . . . . . . . . . . . . .19

Setting the Laser Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setting the Laser Wavelength (Track Mode) . . . . . . . .20

Performing Wavelength Scans . . . . . . . . . . . . . . . . . . . .20

Monitoring Scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Modulating the Laser Output . . . . . . . . . . . . . . . . . . . . . 22

Reading an Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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4 • Contents NEW FOCUS, Inc.

Computer Control 25

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Using the IEEE-488 Interface . . . . . . . . . . . . . . . . . . . . . .25

Using the RS-232 Interface. . . . . . . . . . . . . . . . . . . . . . . . 26

Restoring Local (Front-Panel) Control . . . . . . . . . . . . .27

Understanding the Command Types . . . . . . . . . . . . . .27

Programming for the 64X7 Series Laser. . . . . . . . . . . .28

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Command Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Principles of Operation 49

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

General Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Changing the AC-Voltage Selection 53

Troubleshooting 57

Front-Panel Controls Won’t Work . . . . . . . . . . . . . . . .57

Computer Control Doesn’t Work . . . . . . . . . . . . . . . . .57

Wavelength Not Set to the Start Wavelength . . . . . .57

Scans Won’t Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Power Display Flashes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Calibrating the Laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Customer Service 61

Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Appendices 63

Appendix A: Physical Specifications. . . . . . . . . . . . . . .63

Appendix B: RS-232 Connector Wiring. . . . . . . . . . . .64

Appendix C: Specifications . . . . . . . . . . . . . . . . . . . . . . .65

64X7 rev E.fm Page 4 Tuesday, April 3, 2001 4:16 PM

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Vidia-Discrete Contents • 5

User Safety

Introduction

Your safe and effective use of this product is of utmost importance

to us at New Focus. Please read the following laser safety

information before attempting to operate the laser.

Laser Safety

The laser radiation emitted from this unit may be harmful. Always

follow these precautions:

• Avoid direct exposure to the beam.

• Always wear protective goggles or eyeglasses appropriate for

working with laser light.

• Avoid looking at the beam directly.

• Be aware of and follow the warnings on the safety labels

(examples are shown on page 6).

• To completely shut off electrical power to the unit, turn off the

keyswitch. The

Power

button on the front panel only controls

power to the laser diode; even when power to the diode is off,

power is still supplied to other system components.

• Do not open the laser system. There are no user-serviceable

parts inside the unit.

• Opening the laser cavity may cause exposure to wavelengths

and power outside the speciﬁed range shown on page 65. The

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6 • User Safety NEW FOCUS, Inc.

following table shows the maximum wavelength range and the

maximum internal power accessible inside the laser cavity.

Unauthorized opening of the laser will void the warranty and may result in

burns, electric shock, misalignment of the laser cavity and/or irreparable

damage to the internal components.

Label Identiﬁcation

The following ﬁgures show the locations of the various warning labels

used with this product. Please be aware of them and use caution when

working with the laser.

Figure 1:

Safety labels on the

front of the laser

Model Wavelength Range Max. Power

6427 1450–1650 nm 55 mW

6437 1450–1650 nm 55 mW

Danger label

Addressed

Remote

Laser Power

AC Power

Local Wavelength

Adjust

Track

Wavelength (nm) Current (nA)

Laser Output

FC/APC

Power

Adjust

Power Setpoint (dBm)

64X7 Made in USA

Tunable Laser Source

VIDIA™-DISCRETE

INVISIBLE LASER RADIATION AVOID

DIRECT EXPOSURE TO BEAM

Power output

Wavelength

CLASS IIIB LASER PRODUCT

Start

λ

Stop

INVISIBLE LASER RADIATION AVOID

DIRECT EXPOSURE TO BEAM

Power output

Wavelength

CLASS IIIB LASER PRODUCT

AVOID EXPOSURE

INVISIBLE LASER RADIATION

EMITTED FROM 

THIS APERTURE



AVOID EXPOSURE

INVISIBLE LASER RADIATION

EMITTED FROM 

THIS APERTURE



RS 232

GPIB Step

Hi Res

Aperture label

64X7 rev E.fm Page 6 Tuesday, April 3, 2001 4:16 PM

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Vidia-Discrete User Safety • 7

Figure 2:

Certiﬁcation label

on the back of the

laser

Using the Safety Interlock

The safety interlock connector on the back of the controller is provided

for external safety systems. The system is shipped with a jumper across

the interlock terminals. Do not remove this jumper unless you are

using the safety interlock feature; the laser will not emit light unless the

interlock circuit is closed. The circuit carries 15-V DC.

Interlock

Laser

Sync

Output Current

Modulation

Input

Detector

Input

IEEE 488

RS232

120Vac

WAR N I N G

For continued protection against fire hazard, replace

only with the same type and rating of fuse.

Input VAC

90 - 120

200 - 250

CAUTION 

Risk of electric shock, do not remove 

cover. Refer servicing to qualified personnel.

10 - 250 VAC

1.2 - 0.5A, 48-66Hz

Fuse

2.0 A T

1.0 A T

5215 Hellyer Ave. ■San Jose ■ CA 95051-0905

U.S. Patent #5,319,668 and Patents Pending

Model Number:

Serial Number:

Manufactured:

This product conforms to the applicable requirements of

21 CFR 1040.10 and 1040.11 at the date of manufacture.

5215 Hellyer Ave. ■San Jose ■CA 95138-1001

U.S. Patent #5,319,668 and Patents Pending

Model Number:

Serial Number:

Manufactured:

This product conforms to the applicable requirements of

21 CFR 1040.10 and 1040.11 at the date of manufacture.

64X7 rev E.fm Page 7 Tuesday, April 3, 2001 4:16 PM

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8 • User Safety NEW FOCUS, Inc.

64X7 rev E.fm Page 8 Tuesday, April 3, 2001 4:16 PM

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Vidia-Discrete Getting Started • 9

Getting Started

Introduction

This section outlines the basic steps needed to start using your Vidia-

Discrete laser system, including information on unpacking the system

and brief set-up and starting notes. For more detailed information on

how to operate the instrument, refer to the “General Operation”

chapter beginning on page 13.

Unpacking the System

Carefully unpack the laser system. Compare the contents against the

packing slip and inspect them for any signs of damage. If parts are

missing or you notice any signs of damage, such as dented or scratched

covers, or broken knobs, please contact New Focus immediately. Save

the shipping container and packing material for future shipping needs.

Check that the power module on the back of the controller is set to the

AC line voltage appropriate for your work station (see page 51 for

information on checking and changing the voltage).

Setting Up the Laser

The laser is designed to operate in environments from 15–35 ˚C. If the

laser has been in storage at temperatures outside the range of 10–40 ˚C,

allow the laser system at least 4 hours to equalize.

When connecting ﬁber to the laser, use only FC/APC-connectorized

ﬁber.

64X7 rev E.fm Page 9 Tuesday, April 3, 2001 4:16 PM

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