ILX Lightwave LDX-3620B Laser Diode Driver, Ultra Low Noise, 500 mA
The ILX Lightwave LDX-3620B is a precision laser diode driver designed for ultra-low noise applications. It delivers a stable and accurate current of up to 500 mA, ensuring optimal performance and reliability for sensitive laser diode operations. Ideal for research and development, as well as industrial laser systems.
- Model
- ILX Lightwave LDX-3620B
- Calibration
- Available on request
- Price
- $6,179
- Status
- In stock
- RFQ ref
- LDX-3620B
This unit
The ILX Lightwave LDX-3620B is a battery-powered, ultra-low noise laser diode current source engineered for applications demanding narrow linewidth or stable wavelength laser operation. Delivering precision current output with exceptional noise performance and long-term stability, it excels in sensitive laser diode control applications. Extensive protection circuits safeguard against electrical transients, overcurrent conditions, and intermittent contact failures.
Technical Specifications Current Output & Accuracy
Dual range: 200 mA / 500 mA maximum
Output current accuracy: ±0.05%
Set point resolution: 10 µA / 100 µA
Monitor current range: 20–2000 µA Noise Performance
RMS noise (battery mode): <100 nA
Laser diode output noise/ripple (low bandwidth): <70 nA
Laser diode output noise/ripple (high bandwidth): <600 nA
Current noise density: 815 pA/√Hz
Wideband current noise: 850 nA rms Stability
1-hour stability: <10 ppm
24-hour stability: <50 ppm FS
Temperature coefficient: <20 ppm/°C Operating Modes
Constant current (low bandwidth): DC operation, optimized for laser protection and lowest noise
Constant current (high bandwidth): Supports up to 1 MHz modulation for wavelength tuning
Constant optical power: Measures laser diode photocurrent for stable optical output Modulation
External modulation bandwidth (high): DC to 1 MHz
External modulation bandwidth (low): DC to 10 kHz
Input 1 transfer function: 2 mA/V (10 V range)
Input 2 transfer function: 5 mA/V (10 V range)
AC or DC coupled inputs (fine and coarse) Compliance Voltage: <5 V
Key Features
Adjustable current and voltage limits
Slow-start routine prevents photodiode damage
Normally closed shorting relay and semiconductor switch
Floating output configuration
Power line surge and EFT transient protection
Error indicators for open circuit and power limit conditions
Internal lead-acid battery: up to 16 hours operation
Battery charge time: 15 hours
Built-in charger with front panel indicator
Low battery cutoff circuit
Typical Applications Narrow linewidth spectroscopy, wavelength-stabilized laser systems, optical frequency metrology, and precision laser power control requiring sub-nanosecond current noise and long-term output stability.
Compatibility & Integration Two external modulation inputs (fine and coarse) support analog control. No computer interfaces or remote I/O. Floating output enables flexible system integration.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 1 MHz | Voltage / Current Range: <5 V compliance, 0–500 mA |
ILX Lightwave LDX-3620B — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the ILX Lightwave LDX-3620B. All calibrations are performed to NIST-traceable standards and ship with a certificate. Turnaround is typically 1–3 business days after receipt.
ILX Lightwave LDX-3620B price
This ILX Lightwave LDX-3620B is listed at $6,179. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
ILX Lightwave LDX-3620B calibration cost
NIST-traceable calibration for the ILX Lightwave LDX-3620B is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Turnaround is 1 to 3 business days after receipt. See full calibration details →
