Description

• The LD-1500A/3000A are high power QCW laser diode drivers capable of 20KW (170V/120A) QCW output power. The QCW time period is limited by both average powers and current droop specified. LD-1500A/3000A are also designed as high speed, high current CW/pulse laser diode drivers, of which CW power are 1.5KW and 3KW respectively and the peak current is up to 350A with the rise time of 50ns in Super Pulse mode.
• LD-1500A/3000A uses a high frequency capacitor charging power supply to convert AC input power to a desirable DC output voltage. A DC power supply for QCW laser diode driver reqires a special power supply since the load impedance changes from a short condition to an infinite impedance in short time. To keep high efficiency and charge up the output capacitor in short time, the DC power supply should be specially designed for purpose (called capacitor charging power supply).
• Optional unit of LDC-120/250 is a water-cooled high power laser driver to enhance the output pulse characteristics.

--- Product Specifications ---

CW average Power

1500W(LD-1500A), 3000W(LD-3000A)

QCW Output Power

20KW (both for LD-1500A/-3000A)

QCW Output Voltage

Up to 170V

QCW Output Current

Up to 120A continuously adjustable

CW Output Current

Up to 65A continuously adjustable

Super Pulse

350A Peak Current *1)

Operating Voltage

Up to 170V continuously adjustable

Output Configuration

Positive Output (standard)

Operating Mode

CW, Normal Pulse, & SUPER PULSE, toggled by a front panel SW.

Pulse Rep. Rate

Single shot to 50KHz

Pulse Rise Time

50-200ns (Depends on pulse set & load condition) 

Pulse Width

200ns (External trigger) to DC

Pulse Duty

0-100%

Ripple Current

Less than 1% at a rated 65A

QCW Current Droop

Less than 5% for 500us period at 120A Output Current

AC Input Voltage

90-120V, or 180-240V 

Efficiency

Greater than 80%

Current Stability

Less than 2%

Current Monitor

50 Ohm BNC, 5mv/A

External Pulse Input/External Pulse Trigger

50 Ohm BNC, Pulse input/trigger output is automatically switched by a Int/Ext key SW.

Protection mode

Load Over current, Load Over & Reverse voltage, MosFet Over current, Over Temperature

External Signals

0-10V Optically Isolated Signals:

Cur.Adj (Isolation Amplifier), CW/Pulse, Ext. Key, Ext. Start, Laser, Ready, Fault, Pulse Input, Current Monitor Output, Isolated +5V

Refer to control signals for detail

Dimension

6.50"H x 10.0"W x 14.0"L inch, 16.5cm(H)x25.4cm(W)x35.6cm(L) (including backside fan)

Weights

17.5 lb (LD-1500A), 19.5lb (LD-3000A)

Cooling

Forced Air 

*1): The maximum peak current is limited by a pulse width & pulse rate selected.

Option 1

2m Output Cable

Option 2

Output Enhancement Unit of LDC-250

Option 3

Higher Peak Power/Current,  or Narrower Pulse Width are available.

Contact to Factory.

 

Click the picture to enlarge