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High Energy Harmonic Beam Splitters

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 with regular dichroic beamsplitters. They were specially designed to separate a primary wavelength and its harmonic wavelength from a laser. Spectral Optics provide 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 wavelength ≥ 90% for longer than target reflecting wavelength or ≥ 85% for shorter than 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 the minimal beam deviation is needed, our super thin plate could be a good solution.

 

 

 

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)

 

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