Laboratory equipment set SVETINFO

 

Application

SVETINFO equipment set designed for automated laser diode bars (LDB) and laser diode arrays (LDA) light emission parameters measurments and durability trials.

It is possible to synchronize SVETINFO components by CAN network to construct high power solid-state laser pumping system.

 



Configuration

Equipment set includes:

  • up to 8 LDB/LDA pumping current pulses generators SVETINFO-I 808/940 each combined with thermostabilizing cooler SVETINFO-R or SVETINFO-R-plus
  • control and synchronization unit SVETINFO-S
  • LDB/LDA light field intensity distribution registration unit SVETINFO-V

Optional:

  • dedicated PC with Ethernet 100 interface (8P8C RJ-45)
  • laser power meter with RS-232 interface

 

Characteristics

Continuous operation time no limits
LDB/LDA operating parameters transmission speed
in Ethernet network		 up to 100 Mbps
Current and voltage pulses waveform sampling period 1 µs
Maximum of LDB/LDA single current pulse
registered samples		 programmable, up to 4096
for every channel
LDB/LDA base temperature sampling time programmable, from 10 ms to 2 s
for any channel
Pumping current pulses specified parameters logging on activation of any channel
Generated pumping current pulses count logging after any channel stopping work
Power source
 - power consumption, kV·A
 - cos φ, no less than		 ~220 V, 50 Hz
8
0,95
Thermal dissipation, less than, kW 3,5
Equipment set composition unrestricted
Mass in maximal configuration, less than, kg 70
Operating temperature range, °С +15 to +30

 

 


Components of equipment set SVETINFO


808 & 940 nm laser diode bars and arrays
pumping current pulses generator
SVETINFO-I 808/940


Application

The SVETINFO-I 808/940 generator provides pumping current pulses for laser diode bars (LDB) and laser diode arrays (LDA) (wavelength 808 or 940 nm) with the pulse amplitude up to 220 A forming.

Functions

The generator operates as a standalone unit or as remotely controlled by PC with at least 1 USB 2.0 free port unit.

Unified control command system allows to integrate SVETINFO-I 808/940 generator into automated LDB/LDA characteristics measurement and climatic and durability trials equipment sets.

The LDB/LDA heating by forming constant current on load is available. This mode activation and constant current magnitude settings are controllable by dedicated PC software operating in OS Windows XP, Windows Vista, Windows 7/8.x/10

 

Special functions

In generator SVETINFO-I 808/940 the output current magnitude hardware control is implemented. If output current magnitude exceeds critical level an output generator's cascade is disconnected and current pulses forming process is stopped. If generator connected to control PC with dedicated software an overload notification is shown to operator.

For noise lowering internal cooling fan speed is depends of output cascade's heatsink temperature. The fan operating at low speed if heatsink's temperature less than 40°C and switched to high speed if exceeds. The fan switches to low speed after heatsink's temperature is lower than 35°C

To prevent SVETINFO-I 808/940 generator and tested LDB/LDAs damages from power line disturbances an active power factor corrector is implemented in internal power supply.

 

Characteristics

Characteristic Operating mode
«808 nm» «940 nm»
Type and parameters of output signal:
– single current pulse
– periodic current pulses sequence;
– duration of a pulse's leading edge, less than, µs
– duration of a pulse's trailing edge, less than, µs
+
+
30
30
+
+
30
30
Current pulses amplitude:
– variation range, A
– increment, A
– deviation on a constant load, less than1), %
5 to 220
1
2
5 to 130
1
2
Current pulses duration2):
– variation range, µs
– increment, µs
50 to 300
5
50 to 2500
50
Current pulses repetition period3):
– variation range, ms
– increment, ms
40 to 104
1
  40 to 104
10
Current pulses repetition rate4):
– variation range, Hz
– increment, Hz		  
1 to 25
1
1 to 5
1
Load type nonlinear, complex
Amplitude of voltage on load, less than, V 80
Power supply
- power consumption, less than, kV·A
- cos φ, no less than		 ~220 V, 50 Hz
1
0,95
Power dissipation, less than, W 250
Dimensions (h×w×d), mm3 115×255×320
Weight, less than, kg 5
Operating temperature range, °C +15 to +30

Notes:     
     1)  voltage polarity on load not changes while forming current pulse's trailing edge;
     2)  at half-level of maximum magnitude;
     3)  adjustable in generator's remote control operating mode;
     4)  adjustable in generator's autonomous operation mode.


Thermostabilized cooler for laser dode bars and arrays
SVETINFO-R and SVETINFO-R-plus
 

Application

Thermostabilized cooler SVETINFO-R/R-plus provides mounting of laser diode bar (LDB) or array (LDA) package with 2 or 4 mounting holes and stabilizing it's temperature to pre-set T0 within temperature range -55 to 50°C (liquid cooling SVETINFO-R) or 0 to +50°C (air cooling SVETINFO-R-plus).

To preserve condensate formation on LDB or LDA package it is possible to inflow dried air or nitrogen into cooler's work volume. Temperature of dew point control based on work volume air humidity measurements

Cooler operates as standalone unit or with external control through CAN network. Unified command system allows to integrate cooler into automated sets for LDB/LDA characteristics measurements and climatic and durability trials.

On front panel display are shown:

  • temperature of dew point , °C
  • LDB/LDA temperature preset, °C
  • thermoelectric cooler (TEC) power consumption, V·A and heat flow direction (heating or
    cooling of LDB/LDA plate-base);
  • dried air or nitrogen flow rate

In case of humidity and flow rate sensors are disconnected «***» symbols in corresponded strings are displayed.

 

Characteristics

Characteristic
SVETINFO-R SVETINFO-R-plus
LDB/LDA mounting plate dimensions, mm2 38x38
LDB/LDA package base-plate temperature, °C -55 to +50 0 to +50
LDB/LDA power dissipation, W 25 to 60*
Power supply
- power consumption, less than, kV·A
- cos φ, no less than		 ~220 V, 50 Hz
500
0,95
Dimensions (h×w×d), mm3 205×140×240**
Weight, less than, kg 3
Operating temperature range, °C +15 to +30
Notes:
     *    Maximal power dissipation is defined by LDB/LDA package type and it's base-plate
           temperature preset;
     **  Without air/nitrogen/liquid feeding flexible pipes


Control and synchronizing unit

SVETINFO-S

Applcation

Control and synchronizing unit SVETINFO-S is a part of SVETINFO equipment set, which which is intended to use for laser diode bars (LDB) and laser diode arrays (LDA) automated characteristics measurements.

SVETINFO-S unit provides remote control of operating modes for up to 8 SVETINFO-I 808/940 generator (connected to USB 2.0 or CAN ports of SVETINFO-S) and up to 8 LDB/LDA thermostabilized coolers SVETINFO-R/R-plus (connected to CAN ports of SVETINFO-I 808/940 generators). The connection to SVETINFO-S of up to 2 RS-232 generic LDB/LDA emission measurement external devices (i.e. produced by OPHIR) also available.

Operation modes control of devices plugged to SVETINFO-S and registered data transmission are provided through Ethernet network connection.

 


Characteristics

Ports for devices with USB 2.0 interface 8
Ports for devices with CAN interface 8
Ports for devices with  RS-232 interface 2
Ethernet speed, Mbit/s 100
Power supply
- power consumption, V·A, less than		 ~220 V, 50 HZ
100
Dimensions (h×w×d), mm3 65×255×320
Weight, less than, kg 2
Operating temperature range, °C +15 to +30


Laser diode bars and arrays
light emission intensity distribution registration unit
SVETINFO-V


Application

Laser diode bars (LDB) and arrays (LDA) light intensity distribution registering unit SVETINFO-V is a part of SVETINFO equipment set, which is intended to use for LDB/LDA automated characteristics measurements.

SVETINFO-V unit provides SVETINFO-I 808/940 generator triggering synchronous with TV-matrix exposition launch and following registration of intensity in TV-frame.

For implementation of precise synchronization mode generator SVETINFO-I 808/940 and SVETINFO-V unit are connected by special cable.

 


Characteristics

TV signal type CVBS
Frame size, pixels 720x270
Pumping current pulses triggering inaccuracy
in precise time synchronization mode, ns		 ± 25
Pumping current pulses triggering inaccuracy
in external (CAN) synchronization mode, ns  		 ± 1000
Maximal current pulses rate which allows to register every single TV-frame, Hz  25
Power supply
- power consumption, V·A, less than		 ~220 V, 50 Hz
100
Dimensions (h×w×d), mm3 65×255×320
Weight, less than, kg 2
Operating temperature range, °С +15 to +30