Digital butterfly laser diode controller

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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.

Current driver	B-100	B-200	B-400	B-600
Laser current	3 - 112 mA	5 - 225 mA	10 - 450 mA	15 - 675 mA
Laser current resolution	2.5 µA	5 µA	10 µA	15 µA
Compliance voltage at max. current	3.0 V	3.0 V	3.0 V	2.9 V
RMS noise (10 Hz - 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
Modulation gains	125 µA/V, 1.25 mA/V, 12.5 mA/V	250 µA/V, 2.5 mA/V, 25 mA/V	500 µA/V, 5 mA/V, 50 mA/V	750 µA/V, 7.5 mA/V, 75 mA/V
3 dB modulation bandwidth	10 MHz	10 MHz	10 MHz	10 MHz
AC modulation cutoff frequency	80 kHz	80 kHz	80 kHz	80 kHz
TEC controller
Maximum current	0.8 A	1.2 A	1.2 A	1.2 A
Compliance voltage	±3 V	±3 V	±3 V	±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 - 2.5 mA	0 - 2.5 mA	0 - 2.5 mA	0 - 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 - 60 °C	0 - 60 °C	0 - 60 °C	0 - 50 °C
Compatible lasers	Floating diodes	Floating diodes	Floating diodes	Floating diodes

Current driver	B-100	B-200	B-400	B-600
Laser current	3 - 112 mA	5 - 225 mA	10 - 450 mA	15 - 675 mA
Laser current resolution	2.5 µA	5 µA	10 µA	15 µA
Compliance voltage at max. current	3.0 V	3.0 V	3.0 V	2.9 V
RMS noise (10 Hz - 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
Modulation gains	125 µA/V, 1.25 mA/V, 12.5 mA/V	250 µA/V, 2.5 mA/V, 25 mA/V	500 µA/V, 5 mA/V, 50 mA/V	750 µA/V, 7.5 mA/V, 75 mA/V
3 dB modulation bandwidth	10 MHz	10 MHz	10 MHz	10 MHz
AC modulation cutoff frequency	80 kHz	80 kHz	80 kHz	80 kHz
TEC controller
Maximum current	0.8 A	1.2 A	1.2 A	1.2 A
Compliance voltage	±3 V	±3 V	±3 V	±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 - 2.5 mA	0 - 2.5 mA	0 - 2.5 mA	0 - 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 - 60 °C	0 - 60 °C	0 - 60 °C	0 - 50 °C
Compatible lasers	Floating diodes	Floating diodes	Floating diodes	Floating diodes