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Industrial laser diode controller

PRODUCTS > PHOTONICS > LASER DRIVERS > INDUSTRIAL LASER DIODE CONTROLLER
Industrial laser diode controller
Industrial laser diode controller Industrial laser diode controller Industrial laser diode controller CTL300E current noise density CTL300E modulation frequency response

Koheron CTL300E is a rugged laser diode controller with the following features:
- High-efficiency current driver up to 1600 mA.
- ±4.5 V / 2 A TEC controller.
- Wide input supply voltage range: 6 V to 33 V.
- -40°C to 85 °C operating temperature range.
- On-board monitoring and diagnostics.
- Modulation input port with 5 MHz bandwidth.
- Fast switching between two independent current setpoints via digital input.
- Mates with the TB300 breakout board sold separately.

Quantity Price

Resources

Specifications

CTL300E laser controller is available for type 1 lasers (CTL300E-1-) and type 2 lasers (CTL300E-2-).

400 800 1200 1600
Current driver
Laser current 10 - 425 mA 15 - 850 mA 15 - 1275 mA 15 - 1700 mA
Laser current resolution 7 µA 14 µA 21 µA 28 µA
Compliance voltage at max. current 3.8 V 3.8 V 3.7 V 3.7 V
RMS noise (10 Hz - 1 MHz) 0.85 µArms 1.7 µArms 2.5 µArms 3.5 µArms
Current noise density (10 kHz) 0.8 nA/√Hz 1.7 nA/√Hz 2.7 nA/√Hz 3.4 nA/√Hz
Temperature coefficient 15 ppm/°C 15 ppm/°C 15 ppm/°C 25 ppm/°C
Modulation gain 40 mA/V 80 mA/V 120 mA/V 160 mA/V
3 dB modulation bandwidth 5 MHz 5 MHz 5 MHz 4 MHz
TEC controller
Maximum current 2 A 2 A 2 A 2 A
Compliance voltage ±4.5 V ±4.5 V ±4.5 V ±4.5 V
Temperature stability 0.002 °C/°C 0.002 °C/°C 0.002 °C/°C 0.002 °C/°C
Laser power monitor
Photodiode current 0 - 2.5 mA 0 - 2.5 mA 0 - 2.5 mA 0 - 2.5 mA
Other
Outside Dimensions 131 mm x 41.5 mm x 27.7 mm 131 mm x 41.5 mm x 27.7 mm 131 mm x 41.5 mm x 27.7 mm 131 mm x 41.5 mm x 27.7 mm
Weight 95 g 95 g 95 g 95 g
Supply voltage 6 V to 33 V 6 V to 33 V 6 V to 33 V 6 V to 33 V
Operating temperature -40 - 85 °C -40 - 85 °C -40 - 85 °C -40 - 85 °C
Compatible lasers Floating diodes Floating diodes Floating diodes Floating diodes

More Laser drivers

Current driver

Bias switching

The CTL300E offers fast switching between two independent current setpoints. The two setpoints are defined using the UART interface and the BSEL logic input is used to select the desired setpoint channel. Transition time is about 400 ns.

Example of switching between 100 mA and 600 mA using a Thorlabs BL976-SAG300 pump laser diode with 400 mV laser driver voltage drop (yellow: BSEL signal 3.3 V 100 kHz, green: laser diode output power):

CTL300E bias switching

Modulation frequency response

The figure below shows the modulation frequency response of the CTL300E controller measured with 1 Vpp input modulation voltage amplitude and 400 mV laser driver voltage drop.

CTL300E modulation frequency response

Stability

The figure below shows the current stability of the CTL300-1-1200 controller operated at 1200 mA.

CTL300E current stability

The figure below shows the allan deviation of the CTL300E controller operating at rated current.

CTL300E current stability

Current noise density

The figure below shows the current noise density of the CTL300E controller operating at rated current with 600 mV laser driver voltage drop.

CTL300E current noise density

Temperature stability

The figure below shows the variation of the output current against the ambient temperature of the CTL300E controller operating at rated current.

CTL300E temperature coefficient

Energy efficiency

The CTL300E controller's laser driver is designed to offer a high energy conversion efficiency together with a low current noise. The CTL300E controller maintains high efficiency over a wide range of laser currents and input voltages.

The figure belows shows the overall load efficiency (= laser electrical power / input power) of a CTL300E-1-1200 controller with 200 mV laser driver voltage drop.

CTL300E temperature coefficient

Complementary products

Breakout for CTL300

Breakout for CTL300

45 €

Export information

HS code 9030.33.70
Country of Origin France

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CTL300E
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