A 2D Spatial Light Modulator for spatio-temporal shaping

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The presentation for the Master thesis titled: A 2D Spatial Light Modulator for spatio-temporal shaping. The audience consisted of academic peers with diverse (non-technical) backgrounds. The presentation started with the 'Powers of 10' movie as people entered the room and waited for the show to start. At two points in the presentation, sound fragments were used to represent the laser pulses in the acoustic domain.

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A 2D Spatial Light Modulator
for spatio-temporal shaping
Daan Sprünken

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Phase-only Spatial
Light Modulator

A 2D Spatial Light Modulator for spatio-temporal shaping

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講演者：Ciro Continisio(Unity Technologies) こんな人におすすめ・アーティスト・グラフィックデザイナー・セットのライティングに携わる開発者受講者が得られる知見・Enlighten上のプログレッシブライトマッパーが提供する機能とその強み・多数のオプションを制御して理想のライティング結果を表現する方法

【Unite 2018 Tokyo】プログレッシブライトマッパーの真価を発揮する秘訣

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Mamarazzi--here are the slides from the other night. (I again apologize you did not have them that evening. I also forgot to hand out the clipboards/pens/paper...ug. ) NOTE: you may download the material for your use. It will only be available for 5 days. (The material is for class participant use and is of course, copyrighted. So please no emailing it to friends etc;-) Thanks!) It was my absolute pleasure having you all participate in our first course! Best, Cassandra

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Wavelength selective switch is becoming the central part of ROADM (reconfigurable optical add drop multiplexer). In a WSS, different wavelength channels from the input fiber can be independently switched to different output ports, as shown in the right side picture. The left side picture shows an actual WSS product from Finisar. This illustration shows a generic design of WSS. This optical principle is used on many different WSS designs, such as LCoS or MEMS based WSS switches. Multiple wavelengths come in from the input port. The input port is one port among the fiber array. The fiber array is in the direction of perpendicular to the screen, in other words, the fiber array is in and out of the screen, that is why you only see one port shown in the picture. The light from the input port is first expanded and collimated by the collimation optics. Then the light is projected onto the dispersive element. In a LCoS based WSS, this dispersive element is a conventional grating. The purpose of the dispersive element is to spatially separate these multiple wavelengths. With a conventional grating, the wavelengths are separated into different angles. Blue to the top, green in the middle, and red to the bottom. These lights are still collimated, so next they are focused by the focusing optics and projected onto the switching element. The purpose of the switching element is to direct different wavelengths to different output ports. In a LCoS based WSS, this switching element is a LCoS chip. This time, the switching element directs lights to different perpendicular angles, in other words, in the fiber array’s direction which is perpendicular to the screen. So when the lights trace back, they are focused into different output ports, depending on the switched angle by the switching element.

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