Ridge Waveguide Laser (RW Laser)

Scheme

Principle of a RW Laser
Principle of a RW Laser
SEM Picture of a RW Laser
SEM Picture of a RW Laser
Packaged laser diodes
Packaged laser diodes

In RW lasers the mode guiding is performed by the step of refractive index due to the deeply etched narrow ridge.

Applications

  • Spectroscopy
  • Pumping of fiber amplifier
  • Measurement and control technology
  • Pumping of up-conversion fiber laser
  • Communication
  • Data writing/reading
  • Basis for DFB- and DBR-laser

Wavelength

  • 630 nm to 1200 nm

Chip technology

  • Layer structure by MOVPE technology
  • Structurization of laser diodes using:
    • Projection lithography
    • Dry etching
    • Evaporation and sputter technology for contacts
  • Thinning
  • Scribing, breaking, dicing
  • Facet coating and passivation

Mounting

  • AlN submounts
  • Open heat sink (C-mount)
  • SOT package
  • TO3 package

Typical data

  • Output power up to 2 W (nearly Gaussian shape beam profile)