 |
Interaction media for AO devices manufacturing. |
|
|
Electro gyratory technique for high voltage measurements; |
|
|
Scintillator for monitoring high-energy radiation. |
Crystals with diameter up to 60 mm and 60 - 100 mm length are grown by Czochralsky-Kyropulos method with high frequency and resistive heating. Lead Molybdate AO elements with optical aperture up to 40 ´ 40 mm - are available with the following features: low optical losses, high optical homogeneity, stability to laser radiation. High crystal homogeneity allows to make vacuum thermo - pressure bonding for large aperture devices.
The growth technology applying “know-how” elements was developed for obtaining two different grades of Lead Molybdate. Grade A refers to colorless crystals with extra low optical abortion at 488 nm for application with high CW power argon ion lasers. Grade B crystals having light yellow coloration are developed for the work at 633 nm or larger wavelengths and are characterized by best optical homogeneity and lower solarization effect than colorless crystals. The annealing technique for removing excessive coloration was elaborated.
| Chemical Composition | PbMoO4 |
|---|---|
| Symmetry | tetragonal |
| Melting Point | 1060° C |
| Mohs Hardness | 3 |
| Density | 6.95 g/cm3 |
| Transmission Range | 0.42 - 5.5 microns, T > 70% at 515 nm |
| Refraction Indices at 633 nm | No = 2.38; Ne = 2.25 |
| Sound Velocity, L (001) mode | 3750 m/s |
| Sound Attenuation at 500 MHz | 2.5 dB/cm |
| AO Figure of Merit M2 | 37 . 10-18 s3/g |
Orientation |
within 5 arc. min. |
|---|---|
Sizes |
± 0.2 mm |
Flatness |
l at 633 nm |
Parallelism |
1 arc.min. |
Scratch/Dig |
20/10 |
Better polishing specs. can be provided on request.
| AR coatings are available also: | R < 0.2% per surface for single wavelength coating |
|---|---|
| R < 0.6% per surface for broadband coating (450 - 900 nm). |
 |
Del Mar Ventures 4119 Twilight Ridge San Diego, CA 92130 tel (858) 755-6727 fax (858) 755-6771 v/efax (858) 630-2376 v/efax: (509) 752-0123 delmar@sciner.com optics@sciner.com http://www.sciner.com/Opticsland/ |
 |
Copyright © 2004 [Del Mar Ventures]. All rights reserved.