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Publication

Lattice-matched distributed Bragg reflectors for nitride-based vertical cavity surface emitting lasers

Nicolas Grandjean, Jean-François Carlin, Marc Ilegems, Eric Feltin, Raphaël Butté, Julien Dorsaz
2005
Journal Articles

Abstract

Very narrow spontaneous emission (Deltalambda similar to 0.5 nm), corresponding to a quality factor Q in excess of 800, has been obtained under continuous-wave excitation at room temperature with an AlInN/GaN monolithic microcavity. The structure is made of thin ln(x)Ga(1-x)N/GaN (x = 0.15) multiple quantum wells inserted in a GaN 3lambda/2 (lambda = 420 nm) cavity surrounded by lattice-matched AlInN/GaN distributed Bragg reflectors.

Official source

https://infoscience.epfl.ch/entities/publication/4790e6b6-1dc0-4dd0-843e-1837acbbe647

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Nicolas Grandjean, Jean-François Carlin, Marc Ilegems, Eric Feltin, Raphaël Butté, Julien Dorsaz
2005
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4790e6b6-1dc0-4dd0-843e-1837acbbe647

About this result

Related concepts (16)

Stimulated emission

Stimulated emission is the process by which an incoming photon of a specific frequency can interact with an excited atomic electron (or other excited molecular state), causing it to drop to a lower energy level. The liberated energy transfers to the electromagnetic field, creating a new photon with a frequency, polarization, and direction of travel that are all identical to the photons of the incident wave. This is in contrast to spontaneous emission, which occurs at a characteristic rate for each of the atoms/oscillators in the upper energy state regardless of the external electromagnetic field.

Quality control

Quality control (QC) is a process by which entities review the quality of all factors involved in production. ISO 9000 defines quality control as "a part of quality management focused on fulfilling quality requirements". This approach places emphasis on three aspects (enshrined in standards such as ISO 9001): Elements such as controls, job management, defined and well managed processes, performance and integrity criteria, and identification of records Competence, such as knowledge, skills, experience, and qualifications Soft elements, such as personnel, integrity, confidence, organizational culture, motivation, team spirit, and quality relationships.

Quality (business)

In business, engineering, and manufacturing, quality – or high quality – has a pragmatic interpretation as the non-inferiority or superiority of something (goods or services); it is also defined as being suitable for the intended purpose (fitness for purpose) while satisfying customer expectations. Quality is a perceptual, conditional, and somewhat subjective attribute and may be understood differently by different people. Consumers may focus on the specification quality of a product/service, or how it compares to competitors in the marketplace.

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Lattice-matched distributed Bragg reflectors for nitride-based vertical cavity surface emitting lasers

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