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Free download. Book file PDF easily for everyone and every device. You can download and read online GaN-Based Laser Diodes: Towards Longer Wavelengths and Short Pulses file PDF Book only if you are registered here. And also you can download or read online all Book PDF file that related with GaN-Based Laser Diodes: Towards Longer Wavelengths and Short Pulses book. Happy reading GaN-Based Laser Diodes: Towards Longer Wavelengths and Short Pulses Bookeveryone. Download file Free Book PDF GaN-Based Laser Diodes: Towards Longer Wavelengths and Short Pulses at Complete PDF Library. This Book have some digital formats such us :paperbook, ebook, kindle, epub, fb2 and another formats. Here is The CompletePDF Book Library. It's free to register here to get Book file PDF GaN-Based Laser Diodes: Towards Longer Wavelengths and Short Pulses Pocket Guide.

The emergence of highly efficient short-wavelength laser diodes based on the III-V compound semiconductor GaN has not only enabled high-density optical data storage, but is also expected to revolutionize display applications. Moreover, a variety of scientific applications in biophotonics, materials research and quantum optics can benefit from these versatile and cost-efficient laser light sources in the near-UV to green spectral range. This thesis describes the device physics of GaN-based laser diodes, together with recent efforts to achieve longer emission wavelengths and short-pulse emission.

Towards Longer Wavelengths and Short Pulses

Experimental and theoretical approaches are employed to address the individual device properties and optimize the laser diodes toward the requirements of specific applications. Herman Gewirtz. S P Sukhatme. A Student's Guide to the Mathematics of Astronomy. Daniel Fleisch. Christine Caputo. Mechanical Engineer's Handbook. Dan B. Basics of Physics. Knowledge flow. Lessons from Nanoelectronics.

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  • Topic: Diode lasers for sensor & analytics applications.

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Tools of Radio Astronomy. Kristen Rohlfs. Advances in Imaging and Electron Physics. Jay Theodore Cremer. Handbook of Thin Film Technology. Hartmut Frey. Cambridge Illustrated Handbook of Optoelectronics and Photonics. From the peak-to-valley ratio of these Fabry-Perot oscillations a net gain value of about 13 cm1 can be extracted.

A further increase in current above 85 mA led to a shift towards longer wavelength and a broadening of the gain spectra. This behavior again was caused by resistive heating of the device.

Also in this case it was possible to return to the previous emission spectrum by decreasing the current to the former value and we were able to operate the devices under these conditions for several hours without seeing a significant increase in threshold current. In order to accomplish this goal a further reduction in threshold current and voltage. The inset shows the light output vs current characteristics of the same device.

John Northrup. Eva Taggart. Fred Endicott. Applied Physics Letts. Akasaki and H. Electrochemical Soc. Nakamura M. Senoh, N. Iwasa, S. Applied Physics, 34, pp. L — L Nakamura and G. Nakamura, M. Nagahama, N.


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GaN-Based Laser Diodes : Towards Longer Wavelengths and Short Pulses

Raman spectroscopy is an established method to analyze organic and inorganic substances. The FBH bridges the gap between various life science applications and high-end diode laser technology.

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This enables the development of suitable light sources for high-precision Raman measurements that were already successfully performed on food, soil, plants, and human skin. For several years now, mobile devices like handheld sensors are commercially available and open up application fields including point-of-care diagnostics, on-site food inspection and detection of hazardous substances.

Still, Raman signals are weak, and additional challenges have to be considered. Laser-induced fluorescence originating, for example, from biological samples or ambient light such as daylight could mask the Raman signals and hence complicate identification, especially for unknown substances.

However, the shifted excitation Raman difference spectroscopy SERDS approach is a powerful and easy-to-use spectroscopic technique to overcome these drawbacks.

SERDS requires an excitation light source with two individually controllable emission lines.