Panasonic Develops VCSEL Laser with Surface Plasmon Mirrors

May 25, 2006
Panasonic Develops VCSEL Laser with Surface Plasmon Mirrors

Panasonic today announced the development of a novel VCSEL (Vertical Cavity Surface Emitting Laser) utilizing an epoch-making physical phenomenon called as surface plasmon resonance. This is the world first demonstration of high output power in the VCSEL taking advantage of the surface plasmon resonance. The laser is applicable to practical high speed and short distance optical communication such as optical interconnection and plastic fiber communication.

The VCSEL features a novel "Surface Plasmon Mirror" in which a periodic silver nano-holes array is formed. The laser successfully achieves both high output power and low threshold current by effectively controlling the reflectance and the transmittance at the mirror. The VCSEL can reduce the power consumption in optical communication systems.

The surface Plasmon resonance drastically enhances optical transmission through the silver nano-holes array at an optimized pitch of the holes resulting in high optical output of 2mW. The used silver is known as the metal exhibiting the maximum resonant effect as well as very high reflectance. The enhanced reflectance at the mirror successfully reduces the threshold current down to 0.5mA.

In addition, fabrication process of the silver nano-holes is successfully established using electron beam lithography. In order to avoid any degradation of the silver, the nano-holes are entirely covered by dielectric films such as silicon nitride.

Applications for forty three domestic and eleven international patents have been filed. These research and development results have been presented at Conference on Lasers and Electro-Optics (CLEO) 2006, held in Long Beach, California, U.S. from May 21 to 26, 2006.

Source: Panasonic

Explore further: Protons fuel graphene prospects

add to favorites email to friend print save as pdf

Related Stories

Engineers efficiently 'mix' light at the nanoscale

Nov 13, 2014

The race to make computer components smaller and faster and use less power is pushing the limits of the properties of electrons in a material. Photonic systems could eventually replace electronic ones, but ...

What exactly is Google's 'cancer nanodetector'?

Nov 11, 2014

Last week, US tech giants Google made a splash in the media, announcing plans to develop new 'disease-detecting magnetic nanoparticles'. This was almost universally welcomed – after all, trying to detect ...

Gold nanoparticle chains confine light to the nanoscale

Oct 29, 2014

A multidisciplinary team at the Centre d'Elaboration de Matériaux et d'Etudes Structurales (CEMES, CNRS), working in collaboration with physicists in Singapore and chemists in Bristol (UK), have shown that ...

Quantum effects in nanometer-scale metallic structures

Oct 22, 2014

Plasmonic devices combine the 'super speed' of optics with the 'super small' of microelectronics. These devices exhibit quantum effects and show promise as possible ultrafast circuit elements, but current ...

Recommended for you

Protons fuel graphene prospects

11 hours ago

Graphene, impermeable to all gases and liquids, can easily allow protons to pass through it, University of Manchester researchers have found.

Cooling with the coldest matter in the world

Nov 24, 2014

Physicists at the University of Basel have developed a new cooling technique for mechanical quantum systems. Using an ultracold atomic gas, the vibrations of a membrane were cooled down to less than 1 degree ...

Magnetic fields and lasers elicit graphene secret

Nov 24, 2014

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have studied the dynamics of electrons from the "wonder material" graphene in a magnetic field for the first time. This led to the discovery of ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.