Newport Corporation | Modular Multi-Channel Laser Diode Controller, Model 8000

Modular Multi-Channel Laser Diode Controller, Model 8000

Comprehensive laser diode protection features
Large graphics display, allowing full four-channel visibility
Complete laser diode characterization (L, V, I) using 8500 modules
Complete TE cooler characterization (I_TE, V_TE) using 8350 module
Standard GPIB/IEEE-488.2 and RS-232 interface

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DescriptionSpecifications Models Catalog PDF

Controller Modules

Model 8350 Temperature Controller Module

Model 8325D Dual Temperature Controller Module

Model 8560 Laser Diode Driver Module

Model 8605 combination Laser Diode Drive/TEC Module

Temperature Controllers

We offer a 40 W Temperature Controller Module, Model 8350, for Model 8000 to meet your most demanding TE cooling needs. Complete characterization of I_TE, V_TE and sensor input is possible - making the 8350 module ideal for complete characterization of telecom laser diodes.

We also offer a dual output temperature controller, Model 8325D. It features two independent 15 W outputs that provide the same stability as the Model 8350.

Temperature controllers may be operated in one of three modes:

a. Constant temperature

b. Constant resistance (thermistor and RTD), LM335 Voltage, or AD592 current

c. Constant TE Current (8350 only)

Short-term stability is better than 0.0005°C while long-term stability is better than 0.001°C.

Four sensor types are available:

a. Thermistors,

b. AD590 Series (8350 only)

c. LM335 Series (8350 only)

d. 100Ω Platinum RTD’s (8350 only)

IC sensors inherently display temperature while thermistors and RTD’s display °C by entering a set of constants. Each sensor can be calibrated to increase its accuracy.

A temperature controller can be linked to the LDD module so that the output of the LDD turns off and an error message is displayed if the laser diode temperature exceeds a user-defined operating range. Both T_HI and T_LO are set when configuring the TEC module.

An independent I_TE current limit protects the thermoelectric module from being damaged by current levels that exceed its maximum rating.

Newport's temperature controllers have unparalled long-term stability of better than 0.001°C

Laser Diode Driver Modules

Advanced circuit designs and careful layout of the 8500 Series modules results in an extremely low noise highly stable output current source. This coupled with a low bandwidth mode results in the lowest noise output of any modular laser diode system.

An external analog modulation input allows precision control of the laser output for a variety of applications. Modulation is available in both constant current mode (ACC) and in constant power mode (APC).

A monitor photodiode may be zero biased for CW low noise applications or reversed biased up to 5 volts for high frequency modulation.

All laser diode parameters are accessible with 16-bit resolution including the laser diode’s forward voltage. Full characterization of laser diode parameters is available with every current source module offered with the Model 8000 mainframe.

Combination LDD/TEC Modules

When temperature stabilization is required, the 8600 Series Combination LDD/TEC modules give you full control of your laser diodes. A 15 W (2.5A/6V) TEC section is combined with a quiet current source for complete stabilization of your laser diode.

A single 8600 module is capable of providing the necessary control for wavelength tuning laser diodes. The TEC section is used for coarse tuning while the LDD section is used for fine tuning. The Model 8000 is capable of precision wavelength tuning due to the fine resolution capability resulting from 16-bit control technology.

Combo LDD/TEC modules are designed for use in communication applications and have an internal function generator for testing systems. The user only needs to program the frequency, I_max, and I_min to modulate the laser diode output. Both sinewave or squarewave (50% duty cycle) waveforms are available from 200 Hz–300 kHz. This range of frequencies meets today’s low frequency single tone and high data rate test requirements for datacom and telecom.

So, whether you are wavelength tuning your laser diode or require full characterization capabilities, the 8600 Series combination LDD/TEC modules provide complete control of your laser diode.

Comprehensive Safety Features Protect Your Laser Diode Investments

Time tested safety features are incorporated into the Model 8000 mainframe and each laser diode driver module to provide maximum protection to your laser diode. Input power module filters provide first stage protection against AC line transients. Secondary filtering and power regulation stages coupled with high speed transient detection circuits and a proprietary intermittent contact protection circuit are added resulting in the most sophisticated laser diode instrumentation available today. All this in addition to a slow turn-on sequence, multiple output shorting circuits, and an independent current limiting feature provide the superior protection you demand from all your laser diode instrumentation.

Intuitive Controls and Large Graphics Display Simplify Control and Test Procedures

Improved data presentation and system control is achieved by using large graphics display. The MASTER screen presents the entire system configuration as well as each module’s status as “Soft Keys” guide you through initial system setup routines and operation of each module.

Real-time control of an output is accomplished either by entering a set point on the keypad or on the digitally encoded control knob. The “Soft Keys” access saves system configurations and repetitive procedures. User-defined mini-programs and control functions are entered using the "FUNC" key, giving you maximum flexibility when using the Model 8000.

All controls are clearly marked, and instructions easily defined. The Model 8000 Modular Controller lets you work with laser diodes easier and faster than any other controller on the market today.

Limiting circuitry unconditionally prevents laser diode current from exceeding limit setting independent of operating mode even during external analog modulation.

Model 8000 Rear Panel

For the modular system that best meets your laser diode control needs, call Newport’s Application Sales Engineers.

Temperature Controller (TEC) Module Specifications

	8350 TEC Module		8325D Dual TEC Module⁽¹⁾
TEC Output
Type	Bipolar, Low Noise		Bipolar, Low Noise
Maximum Current (A)	5		5
Compliance Voltage (V)	>8		>6
Typical Power (W)	40		15
I_TE Current Resolution (mA)	0.153		0.076
I_TE Current Accuracy⁽⁵⁾	±(0.02% + 4 mA)
Current Limit
Range (A)	0–5		0–2.5
Accuracy (mA)	±20		±10
Ripple/Noise (rms) (mA)	<1
Short-Term Stability (1 h) (°C)	<0.0005
Long-Term Stability (24 h) (°C)	<0.001
Temperature Coefficient (°C/°C)	<0.05
TEC Measurement Display
Temperature (°C)	-100.00 to 240
Resistance (10 µA) (kΩ)	0.01–495
Resistance (100 µA) (kΩ)	0.001–49.5
Range Resistance (RTD) (Ω)	20-192		N/A
TE Current (A)	-5.000 to +5.000		-2.500 to + 2.500
Range AD590 Current (µA)	248–378		N/A
Range LM335 Voltage (mV)	2331-3731		N/A
Range TE Voltage (V)	0.0–8.0		0.0–6.0
Temperature (°C)	0.01
Resistance (10 µA) (Ω)	10
Resistance (100 µA) (Ω)	1
Resolution Resistance (RTD) (Ω)	0.01		N/A
TE Current (mA)	1
Resolution AD590 Current (µA)	0.01		N/A
Resolution LM335 Voltage (mV)	0.1		N/A
Resolution TE Voltage (V)	0.1		N/A
Temperature (°C)⁽⁴⁾	Typical ±0.1
Resistance (10 µA)⁽⁵⁾	±(0.04% + 16Ω)
Resistance (100 µA)⁽⁵⁾	±(0.05% + 8Ω)
Accuracy Resistance (RTD)⁽⁵⁾	±(0.03% + 50Ω)		N/A
TE Current⁽⁵⁾	±(0.09% + 2 mA)
Accuracy AD590 Current⁽⁵⁾	±(0.005% +0.5 µA)		N/A
Accuracy LM335 Voltage⁽⁵⁾	±(0.09% + 1 mV)		N/A
Accuracy TE Voltage⁽⁵⁾	±(0.005% + 100 mV)		N/A
Temperature Sensors	Thermistor (NTC 2-wire)	AD590	LM335	RTD (100Ω)⁽²⁾
Temp. Sensor Control Resolution (°C)	0.01	0.01	0.01	0.01
Temp. Sensor Control Accuracy (°C)	±0.05⁽³⁾	±0.05	±0.05	±0.05
Sensor Bias	10/100 µA	+5 V	1 mA	1 mA
Temperature Computation and Calibration
Thermistor	1/T = (C1 x 10^-3 + (C2 x 10^-4)(ln R) + (C3 x 10^-7)(ln R)³
AD590	T = C1 + C2 x (I_AD590/1 µA/K - 273.15)
LM335	T = C1 + C2 x (V_LM335/10 mV/K - 273.15)
RTD (100Ω)	R_T = Ro [1 + C1T + C2T²]; T ≥0°C, Ro = resistance at 0°C where Ro = 100Ω for a 100Ω Pt RTD. R_T = Ro [1 + C1T + C2T² + C3T³(T - 100)]; T < 0°C

1) The 8325D has two independent TEC outputs and supports thermistor sensors only
2) Accuracy is with lead wire resistance calibrated out
3) Thermistor accuracy will degrade at temperatures above 25°C
4) Temperature is a value derived from the sensor’s parameter (resistance, voltage or current) using the above temperature computation equations. Accuracy can be computed by applying the sensor’s parameter to the above equations at the temperature in question.
5) ± (x% Reading + Fixed Error) Laser Diode Driver (LDD) Module Specifications

	8505	8510	8530	8560
Laser Output
Output Current Range (mA)	0-500.00	0-1000.0	0-3000.0	0-6000.0
Output Current Resolution (mA)	0.0076	0.0153	0.0458	0.0916
Output Current Accuracy⁽²⁾	±(0.03% + 15 µA)	±(0.03% + 30 µA)	±(0.03% + 90 µA)	±(0.03% + 180 µA)
Compliance Voltage (V)	7	5	5	5
Temperature Coefficient (ppm FS/°C)	<50
Short-Term Stability (1 h) (ppm FS)	<10
Long-Term Stability (24 h) (ppm FS)	<50
Noise/Ripple (rms) (µA)⁽¹⁾
Hi BW	<8.0	<10	<15	<25
Lo BW	<4.0	<8.0	<10	<25
Current Limit
Range (mA)	0–500	0–1000	0–3000	0–6000
Resolution (mA)	1
Accuracy (mA)	±2	±2	±4	±6
Internal Function Generator
Waveforms	Sinewave, Squarewave
Frequency Range⁽³⁾	200 Hz –300 kHz
Squarewave Duty Cycle (%)	50 ±5
Independent Output Set Points	I_max, I_min
Analog Modulation
Input Range, Input Impedance	0–10 V, 10 kΩ
Transfer Function (mA/V)	50	100	300	600
Bandwidth (3dB ±10%), Hi (APC mode only) (kHz)	DC to 350	DC to 250	DC to 100	DC to 100
Bandwidth (3dB ±10%), Lo (APC mode) (kHz)	DC to 10
Bandwidth (3dB ±10*) (APC mode) (Hz)	DC to 20
Photodiode Input
Monitor Current Range (mA)	0–5	0–5	0–20	0–20
Monitor Current Stability (24 h) (% FS)	±0.02
Monitor Current Accuracy⁽²⁾	±(0.004% + 0.5 µA)	±(0.004% + 0.5 µA)	±(0.004% + 1 µA)	±(0.004% + 1 µA)
Temperature Coefficient (% FS/°C)	<0.02
Photodiode Reverse Bias	0–5 V ±10%
Measurement Display
Output Current Range (mA)	0–500.00	0–1000.0	0–3000.0	0–6000.0
Output Current Resolution (mA)	0.01	0.1	0.1	0.1
Output Current Accuracy⁽²⁾	±(0.02% + 20 µA)	±(0.02% + 200 µA)	±(0.02% + 200 µA)	±(0.02% + 200 µA)
Forward Voltage Range (V)	0.000–7.000	0.000–5.000	0.000–5.000	0.000–5.000
Forward Voltage Resolution (mV)	1
Forward Voltage Accuracy⁽²⁾	±(0.005%+1 mV)
Photodiode Current Range (µA)	5–5000	5–5000	15–20,000	15–20,000
Photodiode Current Resolution (µA)	0.1
Photodiode Current Accuracy⁽²⁾	±(0.01% + 0.5 µA)	±(0.01% + 0.5 µA)	±(0.01% + 1 µA)	±(0.01% + 1 µA)
PD Response Range (µA/mW)	0.00–600.00
PD Response Resolution (µA/mW)	0.01
Optical Power Range (mW)	0.00–500.00	0.00–1000.00	0.00–3000.00	0.00–6000.00
Optical Power Resolution (mW)	0.01	0.1	0.1	0.1

1) True rms, 3 Hz–300 kHz, 1/2 FS, resistive load
2) ± (x% Reading + Fixed Error)
3) Output current may begin to roll-off at higher frequencies Dual Laser Diode Driver (LDD) Modules

	8501D ⁽³⁾
Laser Output
Output Current Range (mA)	0-100.00
Output Current Resolution (mA)	0.0015
Output Current Accuracy⁽²⁾	±(0.03%+5 µA)
Compliance Voltage (V)	5
Temperature Coefficient (ppm FS/°C)	<50
Short-Term Stability (1 h) (ppm FS)	<10
Long-Term Stability (24 h) (ppm FS)	<50
Noise/Ripple (rms) (µA)⁽¹⁾	<2.0
Current Limit
Range (mA)	0–100
Resolution (mA)	1
Accuracy (mA)	±2
Analog Modulation	None
Photodiode Input
Monitor Current Range (mA)	0–5
Monitor Current Stability (24 h) (% FS)	±0.02
Monitor Current Accuracy⁽²⁾	±(0.004%+0.5 µA)
Photodiode Reverse Bias	None
Measurement Display
Output Current Range (mA)	0–100.00
Output Current Resolution (mA)	0.01
Output Current Accuracy⁽²⁾	±(0.02%+10 µA)
Forward Voltage Range (V)	0.000–5.000
Forward Voltage Resolution (mV)	1
Forward Voltage Accuracy⁽²⁾	±(0.005%+1 mV)
Photodiode Current Range (µA)	5–5000
Photodiode Current Resolution (µA)	0.1
Photodiode Current Accuracy⁽²⁾	±(0.01%+0.5 µA)
PD Response Range (µA/mW)	0.00–600.00
PD Response Resolution (µA/mW)	0.01
Optical Power Range (mW)	0.00–100.00
Optical Power Resolution (mW)	0.01

1) True rms, 3 Hz–300 kHz, 1/2 FS, resistive load
2) ± (x% Reading + Fixed Error)
3) Configured for Common-Cathode, please call for Common-Anode configuration Combination LDD & TEC Module Specifications

Laser Diode Driver Selection	8605 8605-SO 8605-5V	8610 8610-SO 8610-5V	8630 8630-SO 8630-5V
Laser Output
Output Current Range (mA)	0-500.00	0-1000.0	0-3000.0
Output Current Resolution (mA)	0.0076	0.0153	0.0458
Output Current Accuracy⁽³⁾	±(0.03% + 15 µA)	±(0.03% + 30 µA)	±(0.03% + 90 µA)
Compliance Voltage (V)⁽⁵⁾	7	7	5
Temperature Coefficient (ppm FS/°C)	<50
Short-Term Stability (1 h) (ppm FS)	<10
Long-Term Stability (24 h) (ppm FS)	<50
Noise/Ripple (rms) (µA)⁽¹⁾	<2	<5	<10
Current Limit
Range (mA)	0–500	0–1000	0–3000
Resolution (mA)	1
Accuracy (mA)	±2	±2	±4
Internal Function Generator
Waveforms	Sinewave, Squarewave
Frequency Range⁽⁶⁾	200 Hz –300 kHz
Squarewave Duty Cycle (%)	50 ±5
Independent Output Set Points	I_max, I_min
Frequency Jitter (%)	<1
Frequency Accuracy (%)	±5
Amplitude Accuracy (%)	±5
Sinewave THD (%)	< 2
Squarewave Risetime (µsec)	<1	<5	<10
Photodiode Input
Monitor Current Range (mA)	0–5	0–5	0–20
Monitor Current Stability (24 h) (% FS)	±0.02
Monitor Current Accuracy⁽³⁾	±(0.004% + 0.5 µA)	±(0.004% + 0.5 µA)	±(0.004% + 1 µA)
Temperature Coefficient (% FS/°C)	<0.02
Photodiode Reverse Bias⁽²⁾	5 VDC for "-5V" versions. The others have PD bias of zero.
Measurement Display
Output Current Range (mA)	0–500.00	0–1000.0	0–3000.0
Output Current Resolution (mA)	0.01	0.1	0.1
Output Current Accuracy⁽³⁾	±(0.02% + 20 µA)	±(0.02% + 200 µA)	±(0.02% + 200 µA)
Forward Voltage Range (V)	0.000–7.000	0.000–7.000	0.000–5.000
Forward Voltage Resolution (mV)	1
Forward Voltage Accuracy⁽³⁾	±(0.005%+1 mV)
Photodiode Current Range (µA)	5–5000	5–5000	15–20,000
Photodiode Current Resolution (µA)	0.1
Photodiode Current Accuracy⁽³⁾	±(0.01% + 0.5 µA)	±(0.01% + 0.5 µA)	±(0.01% + 1 µA)
PD Response Range (µA/mW)	0.00–600.00
PD Response Resolution (µA/mW)	0.01
Optical Power Range (mW)	0.00–500.00	0.00–1000.00	0.00–3000.00
Optical Power Resolution (mW)	0.01	0.01	0.1

"-SO" Combo modules indicate the Sync Out version, enabling synchronized modulation among modules.
"-5V" Combo modules are provided with a permanent 5 VDC bias applied across the monitor photodiode pins (Note: this is not user adjustable). Temperature Controller Specifications
(All Modules)

TEC Output
Type	Bipolar, low noise
Maximum Current (A)	2.5
Compliance Voltage (V)	>6
Typical Power (W)	15
Current Limit
Range (A)	0–2.5
Accuracy (mA)	±10
Ripple/Noise (rms) (mA)	<1
Short-Term Stability (1 h) (°C)	0.0005
Long-Term Stability (24 h) (°C)	0.001
Temperature Coefficient (°C/°C)	<0.05
TEC Measurement Display
Temperature (°C)	-100.00 to +240.00
Resistance (10 µA) (kΩ)	0.01–495
Resistance (100 µA) (kΩ)	0.001–49.5
TE Current (A)	-2.500 to +2.500
Temperature (°C)	0.01
Resistance (10 µA) (Ω)	10
Resistance (100 µA) (Ω)	1
TE Current (mA)	1
Temperature (°C)⁽⁴⁾	Typical ±0.1
Resistance (10 µA)⁽³⁾	±(0.04% + 16Ω)
Resistance (100 µA)⁽³⁾	±(0.05% + 8Ω)
TE Current⁽³⁾	±(0.3% + 2 mA)
Temperature Sensor
Sensor Type	NTC, 2-wire Thermistor
Sensor Bias (µA)	10/100
Thermistor Calibration
1/T = (C1 10^-3 + (C2 x 10^-4)(ln R) + (C3 x 10^-7)(ln R)³

1) True rms, 3 Hz–300 kHz, 1/2 FS, resistive load
2) Fixed — if desired, specify 0–5 V at time of order
3) ± (x% Reading + Fixed Error)
4) Temperature is a value derived from the sensor’s parameter (resistance) using the thermistor calibration equations. Accuracy can be computed by applying the sensor’s parameter to the above equation at the temperature in question.
5) May be lower with common anode/thermistor package.
6) Output current may begin to roll-off at higher frequencies. Mainframe Specifications

Display Type	LCD graphics display, 128 H x 240 W pixels
Display Backlighting	Green LED
Display Controls	Brightness, contrast (contrast optimizes viewing angle) and invert screen
Laser Diode On Indicator	Green LASER ACTIVE LED indicates at least one laser diode is on
Output Connectors TEC	15-pin female D-sub
Output Connectors Dual TEC	Two 9-pin female D-sub
Output Connectors LDD	9-pin female D-sub, BNC (external modulation), BNC (auxiliary photodiode input)
Output Connectors Dual LDD	Two 9-pin female D-sub
Output Connectors Combo LDD/TEC	9-pin female D-sub (LDD), and 15-pin female D-sub (TEC)
Chassis Ground	4 mm banana jack
GPIB	24-pin IEEE-488
RS-232	9-pin male D-sub
Power Requirements	90–132 V (max. 5 A), 198–250 V (max. 2.5 A), 50–60 Hz
Size (H x W x D) [in. (mm)]	5.25 (133) x 16.75 (426) x 14 (356)
Mainframe Weight [lb (kg)]	31.5 (14.3)
Module Weight [lb (kg)]	2.5 (1.1)
Operating Temperature	0°C to 40°C (<70% relative humidity non-condensing)
Storage Temperature Range	-20°C to + 60°C (<90% relative humidity non-condensing)
Laser Safety Features	Laser enable keyswitch, interlock, output delay (meets CDRH US21 CFR 1040.10)
Isolation/Crosstalk	All modules electrically isolated with respect to each other and from earth ground

	Model	Description
	300-02	Temperature Controller Cable, DB15 Male to Bare Wire
	300-04	Temperature Controller Cable, DB15 Male to DB15 Female
	300-16	Thermistor, 10.0 kΩ, ±0.2°C
	300-22	Temperature Sensor, AD592CN, -45°C to +125°C Range
	500-02	Laser Diode Driver Cable, DB9 Male to Bare Wire
	500-04	Laser Diode Driver Cable, DB9 Male to DB9 Female
	8000-OPT	Laser Diode Controller Mainframe, Configurable
	8000-RACK	Rack Mount Kit, 19 inch, Model 8000
	8350	TEC Controller Module, 5A/8V, 8000 Series
	8530	Laser Diode Driver Module, 3000 mA, 8000 Series
	8560	Laser Diode Driver Module, 6000 mA, 8000 Series
	8605	Combination LDD and TEC Controller Module, 500 mA, 2.5A/6V, 8000 Series
	8630	Combination LDD and TEC Controller Module, 3000 mA, 2.5A/6V, 8000 Series

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