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CHAPTER 4. COMPUTER CONTROL

Lambda beam user manual

All commands and queries and all responses from the device are followed by the line

termination string ”\r \n” (carriage return & line feed). All instructions have to be written
in capital letters.

Initializing the serial communication

The Lambda mini uses the communication settings displayed in

table 4.2

.

Table 4.2: Lambda mini communication settings

Baud rate

57600

Parity

None

Data bits

8

Stop bits

1

To initialize the controller, send “

INIT

”. The controller responds with the return code

0 (Command successful).

Closing the communication

Send “BYE” to close the connection to the laser controller.

Turning the laser on and off

This command is used to set the and read the ”

Laser Enable

” request. The laser can only

be activated if the key switch is in the ON position and the interlock is closed.

Table 4.3: Laser Enable commands

Command/

Query

Parameter value

Return code

Return value

O=

0: Delete Enable Request
1: Set Enable Request

COMMAND_SUCCESS
PARAMETER_ERROR

-

O?

-

COMMAND_SUCCESS

0: Enable Request not set
1: Enable Request set

Temperature settings

2

The Lambda beam monitors the operating temperature. If it exceeds the permitted tem-
perature range, the laser is turned off to prevent damage to the module. The commands
for temperature settings are listed in

table 4.4

2

Not all laser systems support this function

14

Summary of Contents for Abeam

Page 1: ...User Manual ...

Page 2: ...s GmbH Product specifications and descriptions in this manual are subject to change without notice RGB Lasersystems GmbH will not be responsible for errors and omissions in this manual or for direct or incidental damages in connection with the use of this device or information 2020 RGB Lasersystems GmbH Donaupark 13 93309 Kelheim Germany Telephone 49 9441 1750 33 0 Website http www rgb photonics c...

Page 3: ...r operation 7 3 4 Operation modes 8 3 5 Disconnecting the system 8 3 6 Troubleshooting 9 4 Computer Control 11 4 1 Ltune Laser Control Software 11 4 2 Serial Communication 13 5 Specifications 19 5 1 General Specifications 19 5 2 Beam Specifications 20 5 3 Electrical Specifications 20 5 4 Mechanical specifications 20 6 Optional system configurations 23 7 Certifications and Compliance 25 i ...

Page 4: ...he laser beam away from reflective sur faces in order to avoid uncontrolled reflections Do not mount the laser at eye level It is your responsibility to guarantee the laser safety as required by law Please pay at tention to safety regulations DIN EN 61010 1 DIN EN 60825 1 2003 10 and DIN EN 60950 when operating the laser The Lambda mini series is specified by the United States Na tionalCenterofDev...

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Page 6: ...uarantee highest flexibility in industrial scientific and medical applications Laser Head Features Small design Optical output powers up to 1000 mW Active Temperature Stabilization IP67 protected housing optionally vacuum sealed Optional fiber coupler Horizontal vertical and diagonal mounting options Produced in clean room atmosphere Adjustable temperature Professional housing Laser Controller Fea...

Page 7: ...d D Subminiature9 DSUB 9 modulationinput BNC interlock and power supply AC adapter The alternating current AC adapter provides a regulated power supply from any AC outlet 100 V to 240 V Only use the AC adapter included with your laser otherwise damage to the laser system may occur Cable The Lambda beam system includes a 0 8 m DSUB 9 cable to connect the laser head to the controller as well as a st...

Page 8: ... damaged if more than 2 of the emitted power is reflected back into it Carefully check all mirroring surfaces of your optical setup for possible back reflections If re quired use a suitable optical insulator Do not exceed the environment conditions specified in chapter 5 3 2 Device Setup 1 Make sure the key switch is in the OFF position 2 Connect the Lambda beam laser controller with the laser hea...

Page 9: ...laser driver has the following connectors and controls a controller front side b controller back side 1 Micro USB connector 2 Key switch 3 Laser head connector DSUB 9 4 Modulation mode switch CW TTL Analog 5 Interlock connector 6 Power supply input DC 12 V 7 Modulation input Bayonet Neill Concelman BNC 6 ...

Page 10: ...escribed in the previous section 2 Select the modulation mode using the switch continuous wave CW transistor transistor logic TTL ANALOG on the back side of the controller Changing the modulation mode is only possible while the key switch is in the OFF position 3 For TTL or ANALOG modulation mode please apply a voltage to the modulation input BNC connector Note that even with an input voltage of 0...

Page 11: ...s constant at the value which is defined by the Ltune Software Analog Modulation Mode In this mode the optical output power can be controlled by an external voltage at the analog modulation input connector The output power is modulated proportional to this signal Digital Modulation Mode Here the digital modulation input is used to switch the laser off and on between 0 and 100 maximum power The nom...

Page 12: ...laser again and start the Ltune software If the laser is still not found The Ltune software communicates with the laser using a virtual serial port If the driver is installed correctly it should show up in the Windows Device Manager You can open the device manager by clicking Start Control Panel Performance and Maintenance System Hardware Device Manager In the device manager please open the Ports ...

Page 13: ...CHAPTER 3 INSTALLATION AND OPERATION Lambda beam user manual 3 Reinstall Ltune from the CD 4 Reconnect the laser to the computer 5 Start Ltune 10 ...

Page 14: ...the device driver For the operating system to properly recognize the de software first before attaching the device The software is tested with 32 and 64 bit versions of Windows 10 8 7 Vista and XP It requires the Microsoft NET framework version 3 5 or 4 0 which is already installed on most PCs If this framework is not installed the setup package asks you to install it first You can find the setup ...

Page 15: ...ompactviewbyclicking the small button next to Device Proporties The sliders for Repetition time and Pulse width are for future enhancements The Temperature slider can be used to shift the working temperature of the laser This can be used to shift the wavelength in a certain amount but also has effects on the output power 12 ...

Page 16: ... Commands have no return value Queries query A query returns information about the device or the value of a setting The syntax is the query followed by a question mark Queries have no parameter value A query delivers a return value Return Code A return code gives information about the processing of a command or query There is always a space character between the return code and the result The retu...

Page 17: ...tion Send BYE to close the connection to the laser controller Turning the laser on and off This command is used to set the and read the Laser Enable request The laser can only be activated if the key switch is in the ON position and the interlock is closed Table 4 3 Laser Enable commands Command Query Parameter value Return code Return value O 0 Delete Enable Request 1 Set Enable Request COMMAND_S...

Page 18: ...ion of 0 1 C The highest and lowest possible temperature value can be queried with LTP and LTN respectively Selection of modulation mode The following commands are used to change the mode of modulation The mode se lection via USB takes priority over the manual switch on the laser controller The actual position of the manual switch can be determined with the SP query Table 4 5 commands for selectio...

Page 19: ...vel by P If a level larger than the maximum output power is specified for P or a level larger than the P value is specified for PO the value is decreased to the maximum value Command Query Parameter value Return code Return value PO COMMAND_SUCCESS Lower Output level in mW PO Lower Output level in mW value between 0 and P COMMAND_SUCCESS VALUE_INVALID Status and device information The query S gets...

Page 20: ...can be combined R Round beam L Wavelock E ECDL laser W Water cooled B Multi mode beam S Customized DC COMMAND_SUCCESS ACC active current control ACC APC active Power control APC The result of the status request S is a bit wise combination of the values listed in table 4 8 Table 4 8 status request commands Code Mnemonic Description 0x01 LASER_ON Laser system in active radiation can be emitted 0x02 ...

Page 21: ...er head is too high 0x02 LASER_HEAD_UNDERTEMP Temperature of laser head is too low 0x04 TEMP_SENSOR_OPEN Temperature sensor connection is broken 0x08 TEMP_SENSOR_SHORTENED Temperature sensor cable is shortened 0x40 LASER_OVERCURRENT Current for laser head is too high 0x80 FATAL_INTERNAL_ERROR Internal error laser system cannot be activated 18 ...

Page 22: ...ternal modulation Modulation frequency standard version 500 kHz 473 nm 532 nm and 561 nm 15 kHz3 Control mode Power temperature and modulation controllable via USB Temperature control active TEC TEC accuracy 10 mK glsCDRH Classification Class 3b Weight 94 4 g laser head ESD protection Level 4 Operating temperature 0 C to 45 C non condensing Storage temperature 25 C to 70 C 3An optional acousto opt...

Page 23: ...e mount Pointing stability 10 h 5 µrad K 5 3 Electrical Specifications Power Supply and Control Power supply 12 V DC supplied via AC adapter 100 V to 240 V AC Power consumption up to 2 A at 12 V depending on laser output power Power Supply and Control Connector type BNC Analog digital input 0 V to 5 V Digital input threshold 0 8 V low 2V high Input polarity active high Input impedance 10kΩ 5 4 Mec...

Page 24: ...00 20 00 63 50 M 3x0 5 4X 1 6 00 24 00 20 50 M2 5x0 45 4x 3 02H 7 2x 1 52H 7 2x 6 80 EM I SSI O N height 35 00 5 00 30 50 9 25 21 00 M 2 x 0 4 4 x Figure 5 1 LambdaBeam technical drawing All dimensions in mm 3Dcomputer aideddesign CAD filesareavailablefordownloadonwww rgb photonics com 21 ...

Page 25: ...ngth 39 mm 2 5 in Width 31 mm 1 22 in Height 32 5 mm 1 28 in 32 00 85 00 85 00 1 6 00 51 1 0 25 00 23 80 52 20 22 60 1 5 90 9 90 27 65 Figure 5 2 PowerController laser controller technical drawing All dimensions in mm 3D CAD files are available for download on www rgb photonics com 22 ...

Page 26: ... Water cooling system For operation in extreme conditions there is an optional water cooling system for the bottom plate This ensures an optimal heat dissipation Wavelock The Wavelock option provides an exceptionally stable single mode emission Available for wavelengths of 405 nm 640 nm 660 nm 785 nm and 808 nm 23 ...

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Page 28: ...Version 1 0 complies with the following normative documents EN6100 6 4 2007 A1 2011 EN6100 6 2 2005 and therefore with the following EG requirements Electromagnetic compability 2014 30 EU This declaration applies to all models of the above named product version in case it will be unsed in the configuration of the tesst assembly Kelheim November 19th 2020 Stefan Englbrecht 25 ...

Page 29: ... to comply with the limits for a Class A dig ital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful ...

Page 30: ...ive 2011 65 EU The conformity to RoHS Directive 2011 65 EU is condirmed This declaration applies to all models of the above named product version in case it will be unsed in the configuration of the tesst assembly Kelheim October 12th 2020 Stefan Englbrecht WEEE Directive Please respect the Waste Electrical and Electronic Equipment WEEE directive 2012 19 EU and do not throw you RGB Laser systems G...

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Page 32: ...t 12 CW continuous wave 6 7 8 15 DC direct current 3 6 DSUB 9 D Subminiature 9 4 6 ESD electrostatic discharge 5 19 FCC Federal Communications Commission 26 LED light emitting diode 5 6 9 PDF Portable Document Format 4 RMS root mean square 19 RoHS Restriction of the use of certain hazardous substances 27 TEC thermo electric cooler 19 TEM transverse electromagnetic mode 20 TTL transistor transistor...

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