Blue-green light generation using high brilliance edge emitting diode lasers
β Scribed by A. Jechow; R. Menzel; K. Paschke; G. Erbert
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 784 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1863-8880
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β¦ Synopsis
Abstract
A review about second harmonic generation using edge emitting diode lasers and nonlinear crystals to obtain laser radiation in the blueβgreen spectral range is presented. Therefore, pump laser radiation with high brightness and narrow bandwidth is necessary. Thus, this review gives an overview of the advances made with distributed feedback and Bragg reflector lasers, tapered lasers and amplifiers as well as external cavity diode lasers and master oscillator power amplifier schemes to achieve high brilliance emission. Since periodically poled materials have enabled high second harmonic conversion efficiencies with low and moderate pump powers, the review is focused on frequency doubling using those materials. The most commonly used materials, their properties and limitations are discussed briefly. Single pass and resonant SHG setups with waveguide and bulk nonlinear crystals are discussed and an emphasis on building compact and integrated devices is made.
π SIMILAR VOLUMES
Bright green and blue light emitting diodes have been developed based on ZnSSe : Te active layer, with high crystal quality and a close lattice-match to GaAs substrate. The green LEDs exhibit a fairly long lifetime (>2000 h) at room temperature, which is attributable to the crystal-hardening effect