Spectroscopy Solutions - Broadband Arc Lamp Light Source - KiloArc

KiloArc Broadband Arc Lamp Housing & Power Supply

The brightest 1000W Xe and Hg/Xe arc lamps for UV-Visible-NIR applications

The KiloArc™ is The Brightest 1000 Watt Xe, or Hg/Xe arc lamp, Illuminator in the Industry

If you need a broadband light source in the UV/Vis/NIR portion of the spectrum, an arc lamp has no peer. And if you are looking for the most intense broadband light source you can get, then the KiloArc™ has no peer. The intensity of an arc lamp is extremely high and, depending on the lamp, reasonably continuous throughout the region from 240 to 1,200 nanometers. Usable intensities are even available in the deep UV down to 180 nm and in the near infrared out to 2,500 nm.

While arc lamps themselves are very similar from manufacturer to manufacturer, the arc lamp housings and power supplies that operate these lamps are very different from manufacturer to manufacturer. As such the arc lamp housing can have a dramatic affect on how an arc lamp illuminator performs. We believe that our long experience in light source design is what allows us to give you a unique light source that truly is a better illuminator.

Segment: Scientific
Division: Custom Spectroscopy Solutions
Base product

Overview

Key Benefits of the KiloArc™ arc lamp illuminator:

  • Delivers over 100 watts of optical power to an 8 mm spot.
  • Compact Integrated design includes everything, housing, power supply, igniter.
  • No tools required to change lamps.
  • Delivers the brilliance of 1,000 suns.
  • Ozone free operation, venting is not a necessity, but an option.
  • Economical, the most watts for your dollar.

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

Arc Lamp Housing Design; A Better Approach

Users of old style vertical arc lamp housings are throwing away as much as 90% of the lamps output, due to poor collection efficiency. These old style vertical lamp housings have a collection lens in front of the arc lamp and sometimes, but not always, a back reflector behind them. The problem with this old design is that only the light that actually strikes these optical elements is delivered outside of the lamp housing. All other photons emitted by the lamp are wasted, simply heating the inside of the lamp housing. Conversely the unique KiloArc™ lamp housing has an enveloping ellipsoidal reflector that collects virtually all of the light emitted by the lamp arc, delivering those photons to a secondary focal point outside of the lamp housing, and it does so without any lenses. 

For an equivalent wattage of bulb, the KiloArc™ delivers 5 to 6 times more light emitted by the same bulb, to the secondary focus which is outside the lamp housing! Our design just simply collects a larger solid angle of light than does the old style. That means that an OBB KiloArc™ lamp housing with a 1,000 watt xenon lamp provides the equivalent optical power of a 6,000 watt xenon lamp in an old style vertical lamp housing. And it does so with much greater power density due to a smaller focal spot, and at a small fraction of the cost.

At the heart of every KiloArc™ is a proprietary on-axis ellipsoidal reflector. Our reflectors collect up to 70% of the radiant energy from the arc lamp, versus only 12% for typical condenser systems in vertical lamp housings. The ellipse literally wraps around the arc lamp, collecting 5 to 6 times more output power than from a conventional system.

The arc source is located at one focus points of the ellipse, and the radiation is reflected by the ellipse to the secondary focus which is actually outside of the KiloArc™. Since the light is brought to a focus by reflection rather than refraction (through a lens), there are less losses from absorption or lens-surface back-reflection. This design is so efficient that a Lamp housing can deliver  up to 11 times more optical power into a given smaller area than a conventional lamp housing.

Our ellipsoidal reflectors are proprietary in design and the coating used. They are NOT electro-formed reflectors, which can distort with heat, and can degrade within months. Our proprietary design ensures that distortion of the critical ellipsoid cannot occur as the lamp reaches its operating temperature. This ensures thermal stability of focus. The coating ensures reasonably long operating life, typically 2–3 years.

The KiloArc™ ellipsoidal reflector is an f/4 reflector. The f/# is important when considering matching the KiloArc™ source to some other components like, fiber optics, liquid light guides or monochromators. However f/# for an ellipsoidal reflector is not an indicator of light collection as it is in a simple lens design. The shape and size of the ellipsoidal reflector determines how much light is collected from the lamp arc. The f/# only determines the focal cone angle.

The KiloArc™ is air cooled. However since the system uses ozone free lamps, there is no ozone or venting requirements, although there is an exhaust hose adapter if you want to vent the warm air out of a lab.

The KiloArc™ is a sealed arc lamp housing with a quartz window through which the focused light is delivered. Below is the spectral transmission curve for the quartz window.

Quartz Spectral Transmission Curve

Unique Quick Release Self Aligning Arc Lamp Replacement.

You have a choice of two lamps depending on the spectral output that you require; xenon or mercury-xenon. The lamps are provided as a complete pre-aligned assembly which includes a cooling fin and a quick release self aligning connector. Of course you may order both types of lamps as they are interchangeable.

The xenon gas used in the lamp provides continuous spectra from 180 nm to 2,500 nm at varying intensities. The mercury-xenon provides more of a line spectra.http://www.obbcorp.com/optical-components/light-sources/Popups/Mercury-Xenon.html The spectral curves for xenon and mercury-xenon are normalized (relative intensities) therefore, although you cannot tell from the curves, the mercury-xenon lamp actually has greater intensities than the xenon lamp at it’s various peaks. 

The KiloArc™ uses ozone free quartz lamps which cut off the deep UV below 240 nm.

Typical lamp lifetime is 1,500 hrs. The lamp lifetime is highly dependent on operating conditions. Lamps should not be operated above their rated wattage (1,000 W).

Arc Lamp Ignitor

The internal igniter provides a 45 KV pulse for reliable lamp ignition. Ignition noise can disrupt, or even destroy, sensitive equipment in the vicinity of an arc lamp during start-up. This can be quite a concern in a crowded lab environment. Engineers carefully designed and tested the KiloArc’s triple shielding housing and electronic filtering to ensure that there is no RF transmitted or radiated out of the illuminator

KiloArc™ Arc Lamp Power Supply and Igniter Specifications

Input

210–240 V AC 50/60 Hz

Starting

45 kV starting pulse

Power Rating

800–1200 watts (adjustable) — recommended 800–1000 watts

Output Volts Compliance

17–23 VDC

Output Current Limit

70 A rms

Smart Features

There are two LED indicators on the back, one called the “STATUS” which shows the modes of operation: cool down, stand by, or error. The other is an ERROR indication. It senses problems and displays error codes when they occur.

Particular considerations were paid to safety. The lamp chamber and power supply are constantly monitored for heat, as well as the airflow for cooling. If there are problems the lamp will shut down automatically and you will receive an appropriate error message. If the access door to the lamp is loose or open the lamp will turn off, or not ignite..

We tried to make the operation as fool proof, safe and reliable as possible, making the KiloArc™ ideal for commercial applications.

Remote Control

As an option available at the time of purchase, the KiloArc™ illuminator may be operated remotely with two different control choices. There is a BNC control accessory and a USB control accessory.

BNC Remote Control: The BNC remote control enhancement of KiloArc™ allows for manual control or remote voltage control. This option adds a BNC control and BNC indicators to the standard manual controls. It includes a manual/remote control switch, 0-5 volts remote control BNC, light on BNC TTL status indicator and error BNC TTL status indicator. With this option the KiloArc can be controlled with the standard manual controls, or switched to remote BNC voltage control.

USB Remote Control: The USB remote control enhancement replaces the standard manual controls with a remote USB control. This option replaces the manual controls with a USB control of on/off and voltage power adjust. It includes a Universal Library and a LabVIEW driver. Manual control of KiloArc™ is not possible with this option.

Arc Lamp Power Supply

The KiloArc™ illuminator has a dedicated 1,000 watt power supply and igniter built into it. The power supply is a high efficiency switch-mode type supply. It is rated at 1,200 watts to ensure that it is not operated at the limit of its range. This provides better stability and longer lifetime when operated at 1,000 W. The KiloArc™ has triple shielding and electronic filtering to ensure that there is no RF transmitted or radiated out of the illuminator to interfere with sensitive equipment, like computers.

4-Inch Exhaust Hose Adaptor

The KiloArc™ does not generate harmful levels of ozone (less than a typical copier) with the standard lamps. However for the optional UV enhanced lamps the KiloArc does generate ozone For this reason there is 4" hose adapter on the top of the unit to vent heat and or ozone. Consult with your lab safety officer for proper and safe venting of ozone.

 

 

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

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 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 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 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. We 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.

The KiloArc™ can be mounted rigidly by removing the adjustable feet that come with the illuminator and exposing the four tap holes (6-32) shown on the bottom view below. There are also four mounting holes (6-32) on the front face of the KiloArc™, as shown on the front view below. These front holes are for attaching OBB's adapter tube but they can be used for any other mechanical assembly.

Front View

Right View Left View

Bottom View

 

Top View

Applications

Applications for 1,000 watt arc lamp housings cover a broad range of scientific, OEM and research applications. Arc lamp systems are the light sources of choice for a variety of spectroscopy systems.

Light Source for,

  • Fluorometers
  • UV /Vis Spectrometers
  • CD Spectrometers
  • Stopped-Flow Spectrometers
  • Tunable Illuminators

Arc lamp systems are also used for a broad a range of applications almost as diverse as the wavelength range across which they emit.

  • Dermatology
  • Optical Teaching Labs
  • Photo-Activation
  • Photobiology
  • Photochemistry
  • Photovoltaics
  • Pump Probe
  • Solar Simulators
  • Spectroscopy

The KiloArc™ illuminator is one of many inter-connectable optical components. These Optical Building Blocks can be ordered together to form a complete subassembly or they can be subsequently added to one another. In fact there are enough components to choose from to build your own complete optical system for various spectroscopy requirements.

Compatible Optical Building Blocks


Monochromators

OBB has an excellent 200 mm focal length monochromator. If you would like to couple the KiloArc™ illuminator to our monochromator, then we have a light shield adapter tube to physically connect them and create a tunable illuminator. Inside the light shield is held an IR filter to remove the heat component of the beam. To learn more about our monochromators, click here.  Incidentally, if you are looking for such a tunable KiloArc™ illuminator we have a separate page describing them here.


Sample Compartment

If you would like to couple your KiloArc™ lamp housing into a sample compartment, then we have an ideal solution. The QuadraCentric sample compartment is an excellent unit that has various sample handling capabilities. There is also a light shield adapter tube that directly couples the KiloArc™ lamp housing to the sample compartment with matching optics to focus light into the sample. Inside the light shield is held an IR filter to remove the heat component of the beam. You can then have up to three other input or output optical channels to or from the central sample holder. So you could create a right angle fluorometer or scatter system or a straight through absorbance spectrometer with the appropriate detection components. For each optical channel in the sample compartment there is also a filter holder for wavelength selection. To learn more click here.

Other Accessories

Collimating Lenses

If you need a collimated optical beam, then a collimating lens can be employed for the diverging beam after the light focal point. Be sure to match the collimating lens for your beam diameter requirements and for the f/# of the light source you are considering. We offer a number of collimating lenses to choose from. Also if you need a uniform collimated beam of light be sure to consider an optical diffuser.

There are many other accessories and options to choose from for the KiloArc™ lamp housing. Send us a web quote request with your requirements and we will be sure to get back to you right away.

KiloArc Specification Sheet
CategoryDocuments
Size 0.8 MB
FiletypePDF

REQUEST FOR INFORMATION

Do you have any questions or requests? Use this form to contact our specialists.