L2421 Datasheet, PDF (1/14 Pages) Hamamatsu Corporation – SUPER QUIET MERCURY XENON LAMPS

PATENT
SUPER-QUIET
MERCURY-XENON LAMPS
DEEP UV LIGHT SOURCE
FOR PRECISION MEASUREMENT
A Mercury-Xenon Lamp is a special lamp designed to
provide high radiant energy in the ultraviolet region.
Since an optimum mixture of mercury and xenon gas is
enclosed, this lamp offers the characteristics of both
Xenon lamps and super-high-pressure Mercury lamps.
For example, the spectral distribution of a Mercury-Xe-
non Lamp includes a continuous spectrum from ultra-
violet to infrared of the xenon gas and strong mercury
line spectra in the ultraviolet to visible range. In com-
parison to super-high-pressure mercury lamps, the ra-
diant spectrum in the ultraviolet region is higher in in-
tensity and sharper in width. The Mercury-Xenon Lamp
also features instantaneous starting and restarting, which
are difficult with super-high-pressure mercury lamps,
thus making them an excellent choice as ultraviolet light
sources.
Conventional Mercury-Xenon Lamps have a shortcom-
ing in that the arc point fluctuates and moves gradually
with operating time as a result of the cathode erosion.
Hamamatsu has used its many years of experience and
expertise in the fields of photonics to produce Super-
Quiet (SQ) Mercury-Xenon Lamps. The Hamamatsu SQ
Mercury-Xenon Lamps employ a specially developed
cathode which has minimized the cathode erosion, thus
allowing extremely high stability and long life.
FEATURES
High stability
Fluctuation (p-p) ..................... 1.0 % (Typ.)
2.0 % (Max.)
Drift .................................... ±0.5 % /h (Typ.)
Long life
Guaranteed life .................. 500 h to 1000 h
Average life ...................... 1000 h to 2000 h
Virtually no arc point shift ....... 0.1 mm (Max.)
Instantaneous starting and restarting
High intensity in deep UV region
Point light source, High luminance
APPLICATIONS
Wafer Inspection
Semiconductor annealing
Fluorescent microscope
Blood analyzer
UV curing for epoxies, etc.
Interferometer, Refractometer
Microfilm enlarger
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Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circui₁ts described herein. ©2003 Hamamatsu Photonics K.K.