SLICE Dual Laser Controller

SLICE-DLC

controller

Ultra-low-noise laser controller
Two channels of current control, each with two channels for temperature control
High servo and modulation bandwidths

Made in the USA

The SLICE-DLC is a dual-channel precision diode laser controller. Each channel offers an ultra-low noise current source and two temperature control loops. With a current noise density less than 100 pA/√Hz, the SLICE-DLC is ideally suited for precision spectroscopy and metrology applications. Dual-stage temperature control for each channel enables sub-millikelvin stability of the diode, resulting in minimal frequency fluctuations and drift.

A current servo input enables high-speed (≥10 MHz) control of the laser frequency. High-speed RF modulation enables the user to easily write sidebands onto the laser via injection current, and facilitates a PDH-style peak lock without the use of expensive lock-in amplifiers and modulators.

The SLICE-DLC employs Vescent's proprietary hybrid switching / linear power supply technology to deliver unsurpassed current noise performance.

Features

Two channels of current control, each with two channels of temperature control
Lowest-noise laser controller commercially available
Automatic LIV Curve Capture
Sub-millikelvin temperature stability with properly designed plant
Hybrid switching / linear power supply accepts all AC line voltages
High-speed servo and RF inputs
Current limit and safe turn-on
High servo and modulation bandwidths

Current Driver Performance

Parameter	DLC-200 Value	DLC-500 Value	Units	Comments
Current Channels per Unit	2	2
Current Capacity per Channel	200	500	mA
Minimum Deliverable Current	0	0	mA
Polarity	Cathode ground only	Cathode ground only
Current Noise Density	≤100	≤200	pA/√Hz	At > 1 kHz
Current Noise	≤50 ≤100 ≤300	≤100 ≤150 ≤500	nA, rms	Integrated from 10 Hz to 100 kHz Integrated from 10 Hz to 1 MHz Integrated from 10 Hz to 10 MHz
Current Setpoint Resolution	≤0.0002	≤0.0005	mA
Temperature Drift	≤1	≤1	μA/°C
Compliance Voltage	≥6	≥6	V	At max current
Servo Input Bandwidth	≥10	≥10	MHz
RF Input Modulation Bandwidth	1	1	GHz
LIV Acquisition Range	0 to Imax	0 to Imax	mA
LIV Acquisition Time	1 to 100	1 to 100	s

Temperature Controller Performance

Parameter	Value	Units	Comments
Total Temp. Channels	4		2 per current channel
Compatible Transducer	TEC or resistive heater
Compatible Sensor	NTC thermistor
Temperature Stability	±0.2	mK	w/ properly designed temperature plant
Precision	±0.2	mK
Control Capacity	20; 40	W	per channel; total
Current Capacity	5	A	per temperature plant
Compliance Voltage	≤18	V	automatically adjusted

Front Panel Connections

Parameter	Value	Units	Comments
Input Impedance	50, 1M	Ω	Configurable
Input Voltage Limit	±10	V
Output Voltage Range	±10	V

Input Voltage

Parameter	Value	Units
Overvoltage Category	2
Input Line Voltage	100 - 240	VAC
Mains Supply Voltage Fluctuations	±10	%
Frequency	50 - 60	Hz
Phase	1 phase
Maximum Input Current	2	A
User-Serviceable Fuse	HBC 2.0 A 250 V

Environmental

Parameter	Min. Value	Max. Value	Units	Comments
Indoor or Outdoor Use	Indoor Use Only			Dry Location Only
Pollution Degree of Environment		2
Operating Altitude		10000 (3048)	ft (m)
Operating Temperature	15	30	°C
Operating Relative Humidity	20	60	%	Non-condensing
Dew Point		15	°C