Details

Autor(en) / Beteiligte

• Walpole, J.N.
• Donnelly, J.P.
• Missaggia, L.J.
• Liau, Z.L.
• Chinn, S.R.
• Groves, S.H.
• Taylor, P.J.
• Wright, M.W.

Titel

Gaussian patterned contacts for improved beam stability of 1.55-μm tapered lasers

Ist Teil von

• IEEE photonics technology letters, 2000-03, Vol.12 (3), p.257-259

Ort / Verlag

IEEE

Erscheinungsjahr

2000

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• A Gaussian lateral current-injection profile is approximated by a quasi-random pattern of electrically conducting and insulating regions. This pattern is used for the p-type contact in a laser with a 2.1-mm-long tapered gain region and operating near 1.55-μm wavelength. Lasers with improved stable single lateral modes are obtained with Strehl ratios up to 0.85 for current up to 4.0 A and output power over 1.0 W. Power over 0.5 W can be coupled into a single-mode optical fiber with a cylindrical microlens attached to the output facet to remove the astigmatism of the laser.