How to Characterize VCSEL LIV Performance for 3D Sensing

+ Expert Benchtop Source Measure Unit

Perform Fast and Accurate VCSEL LIV Characterization

VCSEL LIV characterization requires applying controlled current sweeps while simultaneously measuring voltage and optical output across multiple channels. The test setup must support sourcing current or voltage on synchronized channels while accurately measuring voltage, current, and photodetector response to capture device behavior under varying operating conditions.

The measurement process involves sweeping the VCSEL drive current while recording forward voltage and emitted optical power at each step. Accurate results depend on synchronized multi-channel operation, proper measurement range configuration, and capturing small variations in optical output across a wide dynamic range to generate LIV and slope-efficiency curves. The measurement system must also maintain low noise performance and consistent timing to detect nonlinearities such as kinks that can impact optical stability and device performance.

VCSEL LIV Characterization Solution

VCSEL LIV characterization requires simultaneous current sourcing and synchronized voltage and optical measurements across multiple channels. The solution integrates dual-channel source measure units capable of precise current and voltage sourcing with high-resolution measurement performance. It supports high-speed sweep operation and pulsed current capability, enabling accurate LIV characterization while minimizing self-heating effects during testing. The system enables automated current sweeps, synchronized triggering, real-time graph visualization, and data logging through intuitive graphical interfaces. Additional capabilities include low-noise measurement performance for detecting LIV curve nonlinearities and slope-efficiency variations, compliance protection to prevent device damage, and flexible SCPI-based software control options for automation, enabling efficient and repeatable VCSEL characterization in laboratory and production environments.

Get Quote

See Block Diagram of VCSEL LIV Characterization Solution

Explore Products in Our VCSEL LIV Characterization Solution

B2912C Precision Source / Measure Unit (2 ch, 10 fA)

Learn More View Data Sheet
B2902C Precision Source / Measure Unit (2 ch, 100 fA)

Learn More View Data Sheet