UV Optics for Laser Beam Profilers
Accessory optics for profiling of extreme UV lasers
It is possible to profile the beams from extreme UV lasers using Coherent's proprietary UV-to-visible fluorescence conversion faceplates that are designed for use with BeamView Analyser CCD cameras. Coupling directly to the C-mount thread on any Coherent CCD camera, the spatial intensity distribution from laser beams in the extreme UV band from 10 to 355nm can be analysed.
The BIP-12F beam intensity profiler (bottom left image) is a compact, fixed 2:1 telescope which accepts beams of up to 12mm diameter in the wavelength range from 10 to 355nm. The front of the BIP-12F has a C-mount thread which allows it to be used in conjunction with the UV BeamCube when high-power attenuation is needed in the band from 190 to 355nm.
The BIP-5000Z beam intensity profiler (top left image) has a zoom magnification range of between 6:1 and 2:1 and accepts beams of up to 30 x 40mm in the wavelength range from 10-320nm. It comes with the mount shown above.
The BIP-5000SPL (top right image) is a high-power beamsplitter which provides additional high-power attenuation capability for the BIP-5000Z telescope. It is to be used when the laser beam power or energy density exceeds the recommended limits shown in the table below. It provides a right-angle pick-off function and attaches to the entrance aperture of the BIP-5000Z.
Specifications & Ordering Information
| Specifications |
BIP-12F* |
BIP-5000Z** |
BIP-5000SPL |
|
Part No. |
33-3468 |
33-3484 |
33-3492 |
|
Type |
Compact UV telescope |
Zoom UV telescope |
UV beamsplitter |
|
Wavelength Range |
10-355nm |
10-320nm |
10-320nm |
|
Aperture |
12mm |
30 x 40mm |
50mm dia. |
|
Resolution*** |
20µm |
70µm |
- |
|
Saturation |
- |
- |
- |
|
@ 193-248nm |
10mJ/cm2 |
30mJ/cm2 |
- |
|
@ 308nm |
50mJ/cm2 |
50mJ/cm2 |
- |
|
Sensitivity |
5µJ/cm2 |
5µJ/cm2 |
- |
|
Damage Threshold |
- |
- |
- |
|
CW |
5W/cm2 |
1.5W/cm2 |
10W/cm2 |
|
Pulsed |
500mJ/cm2 |
600mJ/cm2 |
- |
|
Uniformity over Aperture |
5% |
5% |
- |
|
Fluorescence Lifetime |
500ns |
5µs |
- |
|
Image Magnification |
2:1 |
6:1 to 2:1 (zoom) |
- |
Notes:
* Optional image magnification of 1:1 is available
** A vacuum compatible version is available for 157nm applications
*** Resolution is camera dependent