&lt;title&gt;High-power laser projection displays&lt;/title&gt;

Hollemann, G.; Braun, Bernhard; Heist, P.; Symanowski, J.; Krause, U.; Kraenert, Juergen; Deter, Christhard

doi:10.1117/12.420786

Cited by 26 publications

(10 citation statements)

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“…conversion (Fiebig et al 2009;Jensen et al 2009), laser display technology (Hollemann et al 2001), and pumping of fiber lasers and amplifiers (Thomas et al 2009). A device which is capable of maintaining a good beam quality and wavelength stability in the Watt range is the monolithically integrated master-oscillator (MO) power-amplifier (PA), where either a distributed Bragg reflector (DBR) (Wenzel et al 2007) or a distributed feedback (DFB) ) laser and a flared (or tapered) gain-region amplifier are combined on a single chip.…”

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confidence: 99%

Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers

et al. 2009

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We report theoretical results on the wavelength stabilization in distributedfeedback master-oscillator power-amplifiers which are compact semiconductor laser devices capable of emitting a high brilliance beam at an optical power of several Watts. Based on a travelling wave equation model, we calculate emitted optical power and spectral maps in dependence on the pump of the power amplifier. We show that a proper choice of the Bragg grating type and coupling coefficient allows optimization of the laser operation, such that the laser emits a high intensity continuous wave beam for a wide range of injection currents.

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confidence: 99%

Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers

et al. 2009

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“…Since the CIE-LAB space is a D65-based encoding space, the optimal color values in XYZ have to be calculated for the spectrum of the CIE-D65 illumination instead of E(k) in Eqs. (2) and (3). Alternatively, this can be assumed by a chromatic adaptation from E-illumination to D65 illumination.…”

Section: Optimal Surface Color Spacementioning

confidence: 98%

“…The problem of limited color gamuts of encoding schemes becomes more actively discussed in the standard organizations (CIE-TC8, IEC TC100/TA2, and ISO) because of lots of recently developed wide color gamut analysis and reproduction systems in the industry. A wide color gamut LED-, Laser-display, and Multi-primary display are the one of these examples [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Comparative color gamut analysis of xvYCC standard

Kim

2008

Displays

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“…And, as we saw earlier with spatial and temporal resolution issues, even if these displays were commonplace and cheap to acquire, current sensors are not built to capture these large luminance ranges or color gamuts. High Dynamic Range photographers, for instance, must resort to taking multiple exposures of a single static scene and then combining the imagery using the appropriate software in a rather involved and complicated process; 16 thus, acquiring real-time HDR content to display on a VR system would again be problematic.…”

Section: Other Visual Issuesmentioning

confidence: 99%

Virtual reality: a reality for future military pilotage?

2009

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Virtual reality (VR) systems provide exciting new ways to interact with information and with the world. The visual VR environment can be synthetic (computer generated) or be an indirect view of the real world using sensors and displays. With the potential opportunities of a VR system, the question arises about what benefits or detriments a military pilot might incur by operating in such an environment. Immersive and compelling VR displays could be accomplished with an HMD (e.g., imagery on the visor), large area collimated displays, or by putting the imagery on an opaque canopy. But what issues arise when, instead of viewing the world directly, a pilot views a "virtual" image of the world? Is 20/20 visual acuity in a VR system good enough? To deliver this acuity over the entire visual field would require over 43 megapixels (MP) of display surface for an HMD or about 150 MP for an immersive CAVE system, either of which presents a serious challenge with current technology. Additionally, the same number of sensor pixels would be required to drive the displays to this resolution (and formidable network architectures required to relay this information), or massive computer clusters are necessary to create an entirely computer-generated virtual reality with this resolution. Can we presently implement such a system? What other visual requirements or engineering issues should be considered? With the evolving technology, there are many technological issues and human factors considerations that need to be addressed before a pilot is placed within a virtual cockpit.

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<title>High-power laser projection displays</title>

Cited by 26 publications

References 0 publications

Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers

Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers

Comparative color gamut analysis of xvYCC standard

Virtual reality: a reality for future military pilotage?

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