These Pulsed Sources use the modular Series Q Housing and a xenon flashlamp. We offer a choice of two interchangeable lamps: a 0.32 J flashlamp and a 5 J flashlamp. Here we offer typical irradiance data for these Xenon Flashlamps.
Build Your Own System
To build your own Series Q Flashlamp System you will need:
- 60000 Series Q Lamp Housing
- Condensing Lens Assembly (Assemblies)
- 60005 Rear Reflector Assembly*
- Appropriate Interface Kit for your lamp
- Appropriate Socket Adapter for your lamp
- Appropriate Power Supply for your lamp
- Your choice of flashlamp
Fig. 1 UV output from the 6427 Xe flashlamp in the Series Q Housing, with and without rear reflector. The data was measured with the MS257™ 1/4 m Spectrograph and a PDA, and although it is not corrected for instrument spectral responsivity, it clearly shows the reflector is more effective at some wavelengths than at others.
Lamp Housing
Series Q Lamp Housings have four ports, but you can only use up to three condensers with these flashlamps because one side is obstructed by a starting wire. Typically, one condenser and one rear reflector is used. Fig. 1 shows the contribution the rear reflector makes to total output; it is more useful at longer wavelengths.
Table 1 compares the various condensing lens assemblies offered for the Series Q,
Table 1 Comparison of Condensers
|
Model |
Condenser Type |
F/# |
Lens Material |
Lens Multiplication Factor* |
Transmittance Range of Lens Material
(nm) |
| 60006
|
Collimating |
F/1.5 |
UV Fused Silica |
0.06 |
200 - 2500 |
| 60008
|
F/0.85, Pyrex asphere |
F/0.85 |
Pyrex® Asphere |
0.13 |
350 - 2500 |
| 60076
|
Collimating |
F/1 |
UV Fused Silica |
0.11 |
200 - 2500 |
| 60007
|
F/2.2, fused silica asphere |
F/2.2 |
UV Fused Silica |
0.05 |
200 - 2500 |
Safety Considerations
These lamps have very high peak power and output in the ultraviolet. Take appropriate UV safety precautions - enclose the beam or use safety eyewear and gloves.
Fig. 2 Different spectral components of a flash have different time dependence, with the ultraviolet output having the shortest duration. The infrared from the arc plasma lasts the longest.
Fig. 3 Spectral output of 6427 Lamp with 5 J and 1.2 J inputs.
Power Supplies
The 68825 and 68826 Power Supplies operate our xenon flashlamps. Both have the following convenience features:
- Front panel control and display of energy and frequency
- Automatic adjustment of flash energy in order to stay within the operating limits of the lamp and power supply
A Note About EMI
Arc lamp ignition requires high voltage, high frequency pulses to break down the lamp, and a high current discharge to sustain the arc. Ignition creates significant electromagnetic energy, which may occasionally interfere with associated equipment. Even EMI proofed circuits may require extra attention to earthing, cable routing and EMI shielding, to avoid ignition interference. Interference may be more problematic with a pulsed arc lamp system as each pulse requires lamp ignition.
Power Supply Specifications
|
Model |
68825
|
68826
|
| AC Input |
|
115/230 VAC, 50/60 Hz, 120 W max |
| Output Power |
Single pulse to 100 Hz* |
Single pulse to 60 Hz |
| Max Energy |
0.32 J |
5 J |
| Trigger Input |
TTL positive edge triggered |
TTL positive edge triggered |
| Sync Output |
TTL pulse |
TTL pulse |
| Weight [lb (kg)] |
7 (3.2) |
7 (3.2) |
*Optimum repetition frequency is 50 Hz, or higher.
Oriel Lamp Housings are designed to operate in a typical laboratory environment (typically 68 to 76 degrees F, up to 45% relative humidity). Temperature and humidity outside of typical laboratory range can contribute to cooling and ignition faults. Cooling issues will cause the over temperature sensor to open, and ignition problems will result from high humidity. Contact a Newport Technical Representative for more information if operating outside the suggested range.
