CTL200 Digital butterfly laser diode controller
Koheron CTL200 is the digital version of the popular CTL101 analog laser controller. It combines a low noise current driver with modulation and a temperature controller. The CTL200 fits in a 75 mm x 75 mm square, uses a single 5.9 V supply, and can operate between 0 and 50°C. The CTL200 is conduction-cooled. It comes with an aluminum base plate and a zero insertion force socket for easy mounting. The CTL200 is also available in a screw terminal version.
1245 €
Resources
Includes
- 5.9 V 3 A power supply
Specifications
CTL200 laser controller is available for type 1 lasers (CTL200-1-) and type 2 lasers (CTL200-2-).
| B-100 | B-200 | B-400 | B-600 | |
|---|---|---|---|---|
| Current driver | ||||
| Laser current | 3 mA to 112 mA | 5 mA to 225 mA | 10 mA to 450 mA | 15 mA to 675 mA |
| Laser current resolution | 2.5 µA | 5 µA | 10 µA | 15 µA |
| Compliance voltage | 3.0 V | 3.0 V | 3.0 V | 2.9 V |
| RMS noise(10 Hz to 1 MHz) | 130 nArms | 220 nArms | 430 nArms | 650 nArms |
| Current noise density(1 kHz) | 120 pA/√Hz | 230 pA/√Hz | 450 pA/√Hz | 670 pA/√Hz |
| Temperature coefficient | 20 ppm/°C | 20 ppm/°C | 20 ppm/°C | 20 ppm/°C |
| AC modulation cutoff frequency | 80 kHz | 80 kHz | 80 kHz | 80 kHz |
| DC modulation | ||||
| Modulation gain(L setting) | 125 µA/V | 250 µA/V | 500 µA/V | 750 µA/V |
| Modulation gain(M setting) | 1.25 mA/V | 2.5 mA/V | 5 mA/V | 7.5 mA/V |
| Modulation gain(H setting) | 12.5 mA/V | 25 mA/V | 50 mA/V | 75 mA/V |
| 3 dB modulation bandwidth | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Modulation input impedance | 50 Ω | 50 Ω | 50 Ω | 50 Ω |
| Modulation input range(L or M setting) | -1.3 V to 1.3 V | -1.3 V to 1.3 V | -1.3 V to 1.3 V | -1.3 V to 1.3 V |
| Modulation input range(H setting) | -1.3 V to 1.0 V | -1.3 V to 1.0 V | -1.3 V to 1.0 V | -1.3 V to 1.0 V |
| TEC controller | ||||
| Maximum current | 0.8 A | 1.2 A | 1.2 A | 1.2 A |
| Compliance voltage | -3 V to 3 V | -3 V to 3 V | -3 V to 3 V | -3 V to 3 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 mA to 2.5 mA | 0 mA to 2.5 mA | 0 mA to 2.5 mA | 0 mA to 2.5 mA |
| Other | ||||
| Outside dimensions | 75 mm x 85 mm x 27 mm | 75 mm x 85 mm x 27 mm | 75 mm x 85 mm x 27 mm | 75 mm x 85 mm x 27 mm |
| Weight | 104 g | 104 g | 104 g | 104 g |
| Supply voltage | 5.7 V to 6.5 V | 5.7 V to 6.5 V | 5.7 V to 6.5 V | 5.7 V to 6.5 V |
| Operating temperature | 0 °C to 60 °C | 0 °C to 60 °C | 0 °C to 60 °C | 0 °C to 50 °C |
| Compatible lasers | Floating diodes | Floating diodes | Floating diodes | Floating diodes |
More Laser drivers
Current driver
Current stability
Current stability over 1 hour of a B-400 controller operated at 400 mA.
Current modulation
The CTL200 controller has two current modulation inputs available on SMA connectors. The DC modulation input allows to modulate the current setpoint between DC and 10 MHz.
The AC modulation input can be used to modulate the laser above 100 kHz with a modulation gain of 20 mA/V:
Current noise
The figure below shows the current noise of the CTL200 controller operating at rated current with the modulation gain set to medium:
Temperature stability
The figure below shows the variation of the output current against the ambient temperature for controllers operating at rated current:
