High Energy Harmonic Beamsplitters
1. Substrate
- Material: UV fused silica or BK-7
- Clear Aperture: Larger than 85%
- Surface Quality (Scratch-Dig)
> 10-5 for regular plate windows
> 60-40 for super thin plate windows
- Surface Flatness
> λ/10 @ 633nm for regular plate windows
> λ/10 per mm @ 633nm for super thin plate windows
- Thickness
> 0.25" ± 0.01" for regular plate windows
> 0.15mm ± 0.02mm for super thin plate windows
- Angular Deviation: ± 3arcmin
- Bevel: < 0.5mm @ 45˚ typical
2. Reflectance
- 1st surface: R ≥ 99.5% at user specified wavelength
- 2nd surface: Anti-reflection coating, Rp ≤ 0.25%, Runp ≤ 0.75%, Rs ≤ 1.3% @ 45˚
3. Transmittance: Tave ≥ 90% for longer λ, Tave ≥ 85% for shorter λ
4. Angle of Incidence: 45˚
5. Damage Threshold: 1 MW/cm2, CW; 10 J/cm2, 20ns, 20Hz (for R); 4 J/cm2, 20ns, 20Hz (for T) @ 1064nm
High energy harmonic beamsplitters are similar to regular dichroic beamsplitters. They were specially designed to separate a primary wavelength and its harmonic wavelength from a laser. Spectral Products provides these harmonic beamsplitters for Nd:YAG and Ti:Sapphire laser systems. The 1st surface with a high energy dichroic coating reflects the target wavelength ≥ 99.5% and transmits other target wavelengths ≥ 90% for longer than the target reflecting wavelength or ≥ 85% for shorter than the target reflecting wavelength. The 2nd surface has a high energy anti-reflection coating for the target transmitting wavelength. If the beam size is small (< 3mm diameter) and minimal beam deviation is needed, our super thin plate could be a good solution.
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Regular Plate Harmonic Beamsplitter |
||||
|---|---|---|---|---|
R λ (nm) |
T λ* (nm) |
Size |
Part Number |
Price ($ USD) |
| 266 | 532 | 1.0" | RPHBS-R266-T532-100-FS | $345 |
| 1.5" | RPHBS-R266-T532-150-FS | $395 | ||
| 2.0" | RPHBS-R266-T532-200-FS | $480 | ||
| 1064 | 1.0" | RPHBS-R266-T1064-100-FS | $345 | |
| 1.5" | RPHBS-R266-T1064-150-FS | $395 | ||
| 2.0" | RPHBS-R266-T1064-200-FS | $480 | ||
| 355 | 532 | 1.0" | RPHBS-R355-T532-100-FS | $305 |
| 1.5" | RPHBS-R355-T532-150-FS | $355 | ||
| 2.0" | RPHBS-R355-T532-200-FS | $415 | ||
| 1064 | 1.0" | RPHBS-R355-T1064-100-FS | $305 | |
| 1.5" | RPHBS-R355-T1064-150-FS | $355 | ||
| 2.0" | RPHBS-R355-T1064-200-FS | $415 | ||
| 400 | 800 | 1.0" | RPHBS-R400-T800-100-BK | $270 |
| 1.5" | RPHBS-R400-T800-150-BK | $310 | ||
| 2.0" | RPHBS-R400-T800-200-BK | $350 | ||
| 532 | 1064 | 1.0" | RPHBS-R532-T1064-100-BK | $260 |
| 1.5" | RPHBS-R532-T1064-150-BK | $295 | ||
| 2.0" | RPHBS-R532-T1064-200-BK | $340 | ||
| 1064 | 532 | 1.0" | RPHBS-R1064-T532-100-BK | $260 |
| 1.5" | RPHBS-R1064-T532-150-BK | $295 | ||
| 2.0" | RPHBS-R1064-T532-200-BK | $340 | ||
* The anti-reflection coating on the 2nd side will be for T λ (nm)
Super Thin Plate Harmonic Beamsplitter |
|||
|---|---|---|---|
R λ (nm) |
T λ* (nm) |
Part Number |
Price ($ USD) |
| 355 | 532 | STHBS-R355-T532-025 | $225 |
| 1064 | STHBS-R355-T1064-025 | ||
| 400 | 800 | STHBS-R400-T800-025 | $185 |
| 532 | 1064 | STHBS-R532-T1064-025 | |
| 1064 | 532 | STHBS-R1064-T532-025 | |
* The anti-reflection coating on the 2nd side will be for T λ (nm)