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Author Hollberg, L. ♦ Turk, G. C.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Diode Laser ♦ Spectroscopic Tool ♦ Laser Diode ♦ Particular Interest ♦ Group 111-v Semiconductor Compound ♦ Low Cost ♦ Near-infrared Laser ♦ Diode Laser Unique Spectroscopic Source ♦ Main Type ♦ Recent Analytical Work ♦ Spectroscopic Sourccs ♦ Nonhnear Optic ♦ Several Time ♦ Extended Cavity ♦ New Technology ♦ Introduc Basic Property Inherent ♦ General Characteristic ♦ Laser Light ♦ Tuning Range ♦ Wful Wavelength Range ♦ Ultrasensitive Detection
Abstract Abtmct-T'he properties of diode lasers that make them attractive as spectroscopic sourccs are hscussed, along with the use of extended cavities to enhance their tuning range and reduce their lhewidths. Semiconductors can now provide efficient, tunable, narrow linewidth laser light over much of the red and near4.r. region of the spectrum. The progress in using nonhnear optics to extend the wful wavelength range of diodes lasers is also considered. Our recent analytical work with diode laser spectroscopy provides examples of their application. 1. INTRODUC~ON AND BASIC PROPERTIES INHERENT low noise, low cost, tunability, and simplicity make diode lasers unique spectroscopic sources, and their use in this respect has been reviewed several times [l-51. Here we will focus briefly on general characteristics and then explore some of the new technologies and applications, with particular interest in spectroscopy and ultrasensitive detection. There are two main types of laser diodes available. The type we will deal with here are the visible and near-infrared lasers fabricated from the group 111-V semiconductor compounds (for example: AlGaInP, AlGaAs, InGaAs and InGaAsP). The approximate
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study