Light diode-pump solid-state laser

Fig. 5.5 Experimental setup. The diode laser is frequency scanned by one waveform generator, while the other controls the modulation. The light couples from a tapered fiber into and back out of microsphere WGMs, and the throughput is detected. A polarizing beamsplitter (PBS) separates throughput of the two polarizations. A diode pumped solid state laser can be used as an external heat source for the microsphere, and the vacuum chamber allows control over the ambient pressure. Reprinted from Ref. 5 with permission. 2008 International Society for Optical Engineering...

A bistable photoswitchable reflective liquid crystal display (PRLCD) based on azo-dye doped liquid crystal (DDLC), which can be written, erased, and rewritten by changing the polarization of a writing laser beam has been demonstrated [2], The mechanism is primarily due to thephotoinduced adsorption of azo-dyes doped in the LC cell. Linearly polarized diode-pumped solid-state laser light with X = 532 nm and an intensity of 150 mW/cm was employed as a writing beam to switch the DDLC sample from a homogeneous texture to a 45° twisted nematic (TN) one (Figure 6.2). 

This photomask has transparent odd zones and opaque even zones made by etching the chromium oxide layer using electron beam lithography. Linearly polarized, diode-pumped solid-state (DPSS) laser light (X = 532 nm), which is within the absorption band of the photosensitive methyl-red (MR) dye (Aldrich), was... 

Besides their applications as tunable light sources, diode lasers are more and more used as pump lasers for tunable solid-state lasers and optical parametric amplifiers. Monolithic diode laser arrays can now deliver up to lOOWcw pump powers [5.124]. 

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