October Spectra of the Month: VCSEL Tests

Single Mode Narrow Linewidth 794 nm
Single Mode Narrow Linewidth 794 nm
Single Mode Narrow Linewidth 794 nm||| Single Mode Narrow Linewidth 794 nm|||

This Month's spectra were contributed by a current Avantes customer in the manufacturing of Vertical Cavity Surface Emitting Lasers (VCSEL).

Equipment

 

Parameters Measured

We utilize Avantes spectrometers to measure spectral peak wavelength, centroid, SMSR, FWHM, and RMS spectral bandwidth of a broad range of VCSEL-based laser products.

Wavelength Range   650nm to ~1000nm
Laser Power 10's of uW's to 10's of Watts
Modes Single-mode to Highly Multi-mode Emission

Platforms

Platforms include high-speed wafer probe/die sort, final production test of packaged components, and general lab use.

Benefits of the Avantes System:

  • Easy integration with python and dotnet software code base
  • High sensitivity for reduced test time, particularly important for high-volume production test
  • High pixel count for broad spectral coverage
  • Good resolution
  • Reliable and robust mechanical design


Spectra Images

single mode narrow linewidth 794 nm VCSEL
Single Mode Narrow Linewidth 794 nm VCSEL
2-mode 890nm VCSEL with low SMSR

2-Mode 890nm VCSEL With Low SMSR
2-mode 890nm VCSEL with low SMSR
Multi-mode 850nm Multi-aperture High-power VCSEL Array

 

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