Experimental characteristics and analysis of transverse modes in 1.3 μm strained InGaAs quantum well VCSELs

• In the context of optical interconnection applications, we report on results obtained on strained InGaAs quantum well Vertical Cavity Surface Emitting Lasers (VCSELs). Our devices are top p-type DBR oxide-confined VCSEL, grown by metalorganic vapour-phase epitaxy (MOVPE). These lasers exhibit low threshold currents and deliver up to 1.77 mW in continuous wave operation at room temperature. Fundamental mode continuous-wave lasing at wavelengths beyond 1300 nm at room temperature is reached for a 4 μm oxide diameter VCSEL. The particular design of the active layer based on a large detuning between the gain maximum and the cavity resonance gives our devices a very specific thermal and modal behaviour. Therefore, we study the spectral and spatial distributions of the transverse modes by near field scanning optical microscopy using a micropolymer tip at the end of an optical fibre.

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

Long-wavelength vertical-cavity surface-emitting lasers

Optical interconnections

Strained InGaAs quantum well

Continuous wave lasers

Metallorganic vapor phase epitaxy

Near field scanning optical microscopy

Semiconducting indium gallium arsenide

Thermodynamic properties

Scanning optical microscopy

Vertical Cavity Surface Emitting Lasers (VCSEL)

Semiconductor quantum wells

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)