Light Source

KiloArc™ Broadband Arc Lamp Housing & Power Supply Specifications

 
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You would have to buy 6 old style vertical arc lamp housings to deliver the same number of photons that a KiloArc™ arc lamp illuminator delivers to a focused spot!

1 KiloArc equals 6 vertical lamps

The KiloArc™ arc lamp illuminator delivers 100 watts of broadband optical power to an 8mm spot!

OBB KiloArc™ Arc Lamp Illuminator Optical Performance Specifications

KiloArc Focal Length Diagram

Optical Performance Specifications

Optical Power
100 watts broadband
Spot Size 8 mm FWHM
Diameter (D) at exit opening 112 mm (4.4 inches)
Focal point from housing (X) 443.87 mm (17.475 inches)
Beam angle (full) 14.4 degrees
Numerical Aperture (N.A.) 0.12
Short Term Optical Noise* 0.15% RMS
Optical Stability 0.2%

* 1,000 points/s, 1 s duration, 1.5 KHz detector bandwidth

OBB KiloArc™ Arc Lamp Illuminator Other Specifications

Other Specifications

Input
210–240 V AC 50/60 Hz
Starting 45 kV starting pulse
Power Rating 800–1200 watts (adjustable) — recommended 800–1000 watts
Lamp Module Type 1000 W Xenon, 1000 W Mercury/Xenon (proprietary to OBB)
Lamp Life Typically 1,500 hrs
Focusing Optics High efficiency f/4 ellipsoid reflector
Power Precision 0.04% (0.4 watts)
Output Volts Compliance 17–23 VDC
Output Current Limit
70 A rms
Height 329 mm (12.9inches)
Width 375 mm (14.8 inches)
Length 489 mm (19.3 inches)
Weight 31 kg (68 pounds)
Window Diameter (D) 127 mm (5.0 inches)
Center Beam Line Height (without feet) 128 mm (5.0 inches)

 

Determining KiloArc™ Arc Lamp Illuminator Energy Output for a Given Wavelength

To determine how much light the OBB KiloArc™ delivers in a specific wavelength region for a given lamp refer to the following spectral output curves for the xenon and mercury-xenon arc lamps. These curves provide an estimation of the percentage of the total optical output power for a given wavelength range of the emitted light from the lamp.

Arc Lamp Spectrum Band Pass Intensity Charts

Xenon Arc Lamp Spectrum

Xenon Arc Lamp Spectrum

Xenon Arc Lamp Intensity Chart

Wavelength

% output

Wavelength

% output

Wavelength

%output

Wavelength

% output

250-300 2.489 750-800 4.682 1250-1300 0.896 1750-1800 0.345
300-350 3.540 800-850 8.914 1300-1350 0.705 1800-1850 0.306
350-400 4.577 850-900 6.284 1350-1400 0.931 1850-1900 0.306
400-450 5.245 900-950 6.788 1400-1450 0.919 1900-1950 0.306
450-500 5.626 950-1000 5.848 1450-1500 1.118 1950-2000 0.268
500-550 5.214 1000-1050 2.871 1500-1550 0.701 2000-2050 0.345
550-600 5.729 1050-1100 1.953 1550-1600 0.513 2050-2100 0.230
600-650 6.472 1100-1150 1.402 1600-1650 0.515 2100-2150 0.230
650-700 5.649 1150-1200 1.593 1650-1700 0.552 2150-2200 0.230
700-750 4.862 1200-1250 0.846 1700-1750 0.428 TOTAL 100.000

 

Mercury/Xenon ArcLamp Spectrum

mercury Xenon Arc Lamp Spectrum

Mercury/Xenon Arc Lamp Intensity Chart

Wavelength

% output

Wavelength

% output

Wavelength

%output

Wavelength

% output

260-270 2.205 380-390 0.538 500-510 0.199 800-900 3.186
270-280 2.678 390-400 0.488 510-520 0.199 900-1000 2.947
280-290 2.877 400-410 2.862 520-530 0.199 1000-1100 3.942
290-300 4.231 410-420 0.304 530-540 0.249 1100-1200 3.544
300-310 3.883 420-430 0.319 540-550 3.325 1200-1300 2.190
310-320 5.730 430-440 5.207 550-560 1.563 1300-1400 4.580
320-330 0.538 440-450 0.498 560-570 0.249 1400-1500 2.091
330-340 1.572 450-460 0.199 570-580 3.463 1500-1600 2.449
340-350 0.448 460-470 0.199 580-590 4.908 1600-1700 2.051
350-360 0.886 470-480 0.199 590-600 0.521 1700-1800 2.190
360-370 8.403 480-490 0.229 600-700 3.467 1800-1900 1.990
370-380 1.473 490-500 0.483 700-800 2.041 1900-2000 1.990

 

Example

How much light does the KiloArc™ arc lamp illuminator deliver with a 1,000 watt xenon arc lamp in a 5 nm bandwidth at 400 nm?

The answer is an astounding 500 mW! Here is how we get that answer as well as a cautionary note about this number.

Calculation: The total power of the 1,000 watt xenon lamp is 100 watts broadband (100,000 mW). Referring to the Band Pass Intensity Chart, and graph, for the xenon lamp indicates that at 400 nm there is approximately 5% of the total lamp output in a 50nm wide band. Therefore in a 5 nm bandwidth at 400 nm there will be approximately 0.5% (1/10th of 50 nm) of the total lamp output. This corresponds to 500 mW.

Caution about available energy: Remember that not all of this light may be available to you for your application. In the first place the KiloArc™ is so powerful that we would recommend using an IR heat filter to prevent damage to secondary optical elements. Although this primarily cuts out the IR there will be some loss at other wavelengths through the water jacketed, water filled, IR filter.

Filter for wavelength selection: If you wanted to use a 5 nm bandpass filter for wavelength selection, then there will also be losses through the filter combinations you would use to filter out the unwanted wavelengths without photo-damaging your filters, as well as coupling losses for any optics you incorporate. Therefore you will end up with less than 500 mW, but you will still have a severely intense beam of light.

Monochromator for wavelength selection: If you are going to use a monochromator to filter and select the 5 nm output at 400 nm, then there are a number of factors to consider before determining exactly how much light will be available through the monochromator. Specifically the slit size required for a 5 nm bandpass, the grating efficiency curve for the grating used, the f/# matching of the monochromator, and the throughput loss of the monochromator coupling. OBB happens to provide a tunable KiloArc™ illuminator that consists of the KiloArc™ lamp housing coupled to a 200 mm focal length monochromator. When using the 1,000 watt xenon lamp a considerable amount of light in the original 8 mm focused spot doesn't even get through the narrow 1.25 mm slits required to obtain a 5 nm bandpass with a standard 1,200 l/mm grating. Firstly we have to remember that the 8 mm spot is actually the FWHM of the total light focused. This means that approximately half of the total power is outside an 8 mm diameter. So, less than 5% of the total focused light gets into the monochromators narrow 1.25 mm slit in the first place. Additionally, depending on the grating used, its wavelength angle, its efficiency curve as well as the coupling loses of the monochromator you will have a total throughput for the monochromator of roughly 30%. This results in about 10 mw of energy delivered through the monochromator at 400 nm in a 5 nm bandpass. This number is in good agreement with our empirical results for the Tunable KiloArc™. Refer to the Tunable KiloArc™ web page for the corresponding output curve. Also remember that other monochromators, and certainly different gratings will have affects that will have an impact of the total throughput.

 

For more information on the KiloArc™ visit the KiloArc™ Applications page.

 
OBB has a policy of continuous product development and reserves the right to amend part numbers, descriptions and specifications without prior notice.
 
 
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HORIBA Scientific
Optical Building Blocks
3880 Park Avenue
Edison New Jersey
08820-3097

Tel: 732-494-8660
Fax: 732-623-8129
E-mail:info.sci@horiba.com