SDC-150A is a complete solution for powering and controlling a diode-pumped solid-state Nd:YAG laser. Our module includes a pulsed current source to drive pumping diodes, TEC controller for their thermal stabilization and embedded Pockels cell driver for generation of Q-switched pulses.
The module requires a 28 V DC (±7 V) power supply.
SDC-150A can be controlled either digitally via RS-232 interface or manually using jumpers and trimpots (stand-alone mode). Base interface is RS-232 (RS-485 is available as an option). Simple PC software is supplied together with the controller.
The module could be synchronized internally, when pulses are generated according to the internal clock, or externally, when pulses with user fixed width are triggered by external synchronization signal.
The cooling, when needed, is performed through the heatsink attached to the bottom surface.
Output 1 (diode driver, pulses to pumping diodes):
Load
Laser diodes (bars and stacks)
Diode compliance voltage (VMAX)1
25 V by default (other on request)
Maximum output current (IMAX)1
150 A by default (other on request)
Output current (I)
10 - 100 % of IMAX adjustable
Pulse width (t)
50 - 300 us adjustable (other on request)
Repetition rate (f)
1 - 30 Hz adjustable (other on request)
Maximum output power (V*I*t*f)
> 20 W by default (maximum parameters cannot be realized at the same time due to the maximum power limitation)
> 40 W on request (with derated operation temperature)
Target regime
150 A, 25 V, 250 us, 20 Hz (< 20 W)
Output 2 (TEC):
Max. current / voltage
< 5 A / 20 V (other on request)
Temperature range
+20 … +60 °C
Output 3 (Pockel cell driver, DKDP version):
Pulse shape
Triangular (fast rise, relatively slow decay)
Recovery time
5 us typically
Pulse amplitude
1600 … 4000 V adjustable
Other
Adjustable delay relatively to the diode driver
Output 3 (Pockel cell driver, LiNbO3 version):
Pulse shape
Triangular (fast rise, relatively slow decay)
Recovery time
5 us typically
Pulse amplitude
800 - 2000 V adjustable (other on request)
Other
Adjustable delay relatively to the diode driver
Cooling
Passive cooling through a cold-plate attached to the driver’s bottom; the customer’s responsibility is to keep the cold-plate temperature below 70ºC (e.g. by attaching cold-plate to a massive heatsink or to system’s chassis)
Protections
• From mismatched load at the output
• From short-circuit at the outputs
• From overheating of internal components
• Interlock door connection
Interfaces (digital)
RS-232 machine interface
Interfaces (analogue)
• IDC
• Fault
• Synchro input
• Synchro output
Environment:
Operating temperature
Driver is designed for –30 … +55 ºC operating temperatures (we do our best to assure good performance in the required range of operating temperatures, though due to the absence of temperature chamber real testing in whole range of ambient temperatures is not performed by us)
Storage temperature
-40 … +85 °C
Humidity
0 ... 90%, non-condensing
Other:
Size (LxWxH)
190x110x60 mm
1)
The maximum peak power (IMAX * VMAX) shouldn’t exceed 10 kW
Many parameters of the SDC-150A can be taylored to your needs. Some of them are listed below:
- output voltage / current for diodes
- output voltage (Pockels cell driver)
- reduced or bursted output power
- interfaces
- type and location of connectors
Modifications
Base version:
- • 150 A maximum output current
- • 25 V maximum output voltage
- • Maximum output power > 20 W
(target regime 150 A, 25 V, 250 us, 20 Hz)
Customized version:
- • 110 A maximum output current
- • 85 V maximum output voltage
- • Maximum output power > 20 W
(target regime 110 A, 85 V, 220 us, 10 Hz)
Customized version:
- • 110 A maximum output current
- • 85 V maximum output voltage
- • Boosted output power; achieved by the cost of narrowed operating temperature range
-
- • Maximum output power > 40 W
(target regime 110 A, 85 V, 220 us, 20 Hz)
- • Operating temperature 0 - 40 °C
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