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Beam Turning Assemblies

Beam Turning Assemblies
2Pages

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229 Email: sales@newport.com • Web: newport.com L i g h t S o u r c e s TECHNICAL REFERENCE CALIBRATION SOURCES DEUTERIUM SOURCES ARC SOURCES INCANDESCENT SOURCES MONOCHROMATOR AND FIBER ILLUMINATORS SOLAR SIMULATORS PHOTOLITHOGRAPHY INSTRUMENTS ACCESSORIES FOR ORIEL LIGHT SOURCES Oriel Beam Turning Assemblies Dichroic Beam Turner on output of 250 W Research Lamp Housing These beam turners “turn” the output beam from an Oriel Light Source 90° in any direction without affecting the collimation. Fig.1 shows an example. You can reflect the entire lamp output or only a selected portion of the UV and VIS spectrum. This is useful for applications where the IR is troublesome, particularly with our high wattage quartz tungsten halogen and arc sources. Beam Turners are made up of two components: the mirror and mirror holder. The components are sold separately so you can interchange the mirrors. Full Reflector or Dichroic We offer two types of beam turning mirrors: full reflectors and dichroics. The full reflectors are coated with an AlMgF2 coating optimized to increase reflectivity in the ultraviolet. They are useful from 200 nm to 30 ìm. See Fig. 2 for a reflectance curve. Use them when broadband output is needed. The dichroic mirrors are designed for high reflectance and polarization insensitivity over a limited spectral range in the UV and/or VIS. They pass most of the unwanted IR radiation to an absorbing assembly behind them, but do not remove all of it (see Fig. 2 for a reflectance curve). We have found that enough infrared is removed to make some irradiation studies practical without further filtering. If further filtering is required, use a liquid filter (see page 238) to remove infrared intensity. WARNING This illuminator emits HIGH INTENSITY INVISIBLE ULTRAVIOLET LIGHT. Exposure may cause DELAYED SEVERE EYE AND SKIN BURNS. Use protective eye and skin covering. ULTRAVIOLET LIGHT Operate in well ventilated area. OZONE Lamps run at very high temperatures. Allow adequate time for lamp to cool before opening door. TEMPERATURE HIGH VOLTAGE LAMP EXPLOSION HAZARD COLLIMATED BEAM BEAM TURNING ASSEMBLY WITH DICHROIC MIRROR MOST OF THE RADIATION IS ABSORBED Fig. 1 Dichroic Beam Turning Assembly mounted to the output condenser of a Research Source. The UV is reflected and the IR is absorbed REFLECTANCE (%) 200 220 240 260 280 300 320 340 30 20 10 66231 66232 66233 66242 66243 66241 360 380 400 0 60 50 40 70 90 80 100 WAVELENGTH (nm) Fig. 2 Reflectance of select DUV dichroics Safety Considerations The outside of the mirror housing, particularly the fins of the heat sink, become very hot, especially when used with our high wattage sources. Personnel should use caution when working around these sources. • DUV Models • Turn beam 90° in any direction • Reflect the UV-VIS, and block the infrared • Mirrors are easily interchanged

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230 Phone: 1-800-222-6440 • Fax: 1-949-253-1680 L i g h t S o u r c e s TECHNICAL REFERENCE MONOCHROMATOR AND INCANDESCENT SOURCES ARC SOURCES DEUTERIUM SOURCES CALIBRATION SOURCES FIBER ILLUMINATORS PHOTOLITHOGRAPHY SOLAR SIMULATORS INSTRUMENTS ACCESSORIES FOR ORIEL LIGHT SOURCES 1.0 0.8 0.6 0.4 0.2 0.0 800 1600 WAVELENGTH (nm) REFLECTIVITY 200 400 600 1000 1200 1400 1800 2000 2200 2400 200 400 600 800 0.0 0.2 0.4 0.6 0.8 1.0 66217 66227 66237 66216 66226 66236 66218 66228 66238 66215 66225 66235 66219 66229 66239 66217 66227 66237 66216 66226 66236 66218 66228 66238 66219 66229 66239...

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Beam Turning Assemblies 2Pages

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Beam Turning Assemblies
2Pages