Get Field Guide to Lasers (SPIE Field Guide Vol. FG12) PDF

By Rudiger Paschotta

ISBN-10: 0819469610

ISBN-13: 9780819469618

This consultant offers an summary at the crucial forms of lasers and their key homes in addition to an advent into crucial actual and technological points of lasers. except describing the fundamental ideas (such as motivated emission and the houses of optical resonators), this consultant discusses the varied vital houses of laser crystals, the effect of thermal results on laser functionality, tools of wavelength tuning and pulse new release, and laser noise. Practitioners also will achieve important perception from feedback on laser protection and acquire new principles approximately how you can make the laser improvement approach extra efficient.

Contents

- word list of Symbols
- uncomplicated ideas of Lasers
- Laser Beams
- Optical Resonators
- Waveguides
- Semiconductor Lasers
- Solid-State Bulk Lasers
- Fiber and Waveguide Lasers
- Dye Lasers
- fuel Lasers
- different sorts of Lasers
- Narrow-Linewidth Operation
- Tunable Lasers
- Q Switching
- achieve Switching
- Mode Locking
- hollow space Dumping
- Nonlinear Frequency Conversion
- Laser Noise
- Laser safeguard
- layout and improvement
- Bibliography
- Index

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Extra info for Field Guide to Lasers (SPIE Field Guide Vol. FG12)

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An improved technique is based on reshaping the beam for a symmetrized beam quality (and not only beam radius) before launching. This can be done, for example, with micro-optical elements. • For diode bars, the problem of asymmetric beam quality is even more severe. Here, the individual emitter outputs may be coupled into separate fibers of a fiber bundle. The fibers are arranged in a linear array on the side of the diode bar, but as a circular array on the output end. Alternatively, some kind of beam shaper for symmetrizing the beam quality may be used before launching into a single multimode fiber.

In Nd:YVO4). 44 Lasers Properties of Diode Lasers Aspect Properties important types low-power, single-mode laser diodes; broad-area laser diodes; diode bars; diode stacks applications laser pointers; optical data storage; transmitters for telecommunications; pumping of bulk lasers; direct diode material processing pump source electrical current power efficiency order of 50% accessible wavelengths mostly near infrared but also midinfrared, visible, or ultraviolet wavelength tuning over a few nanometers via temperature; over tens of nanometers with frequencyselective optical feedback average output power typically between 1 mW (small, low-power diodes) and 5 kW (diode stacks) beam quality diffraction-limited for very lowpower devices, poor for highpower devices continuous-wave operation yes nanosecond pulse generation yes, with gain switching but low pulse energies picosecond & femtosecond pulse generation picosecond pulses with gain switching Semiconductor Lasers 45 Quantum Cascade Lasers While most semiconductor lasers emit in the nearinfrared region, quantum cascade lasers (QCLs) emit in the midinfrared, with wavelengths between a few microns up to more than 10 μm, sometimes even many tens of microns (for optical frequencies in the terahertz region).

Picture is not precise and totally breaks waveguide dimensions. may also be of light rays However, this down for small There are waveguide lasers, where the light circulating in the laser resonator is at least partially propagating in a waveguide structure. Fiber lasers and most diode lasers constitute important examples for waveguide lasers. Also, laser light can be transported from the light source to some application, using a waveguide. In most cases, optical fibers are used for that purpose.

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Field Guide to Lasers (SPIE Field Guide Vol. FG12) by Rudiger Paschotta


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