Cube Beamsplitters

• Optical Material: UV fused silica, BK7
• Surface quality: 10-5 for UV fused silica, 20-10 for BK7
• Transmitted Wavefront Error: λ/4 @ 633nm
• Clear Aperture: ≥85% of central dimension
• Anti-reflection coating: R≤0.25% on all leg sides
• Damage Threshold:
• Optical Cement: 1J/cm², 20ns, 20Hz @1064nm; 100W/cm², CW @515nm

• Molecular Fusion ^TM: 10J/cm2, 20ns, 20Hz @1064nm; 1MW/cm2, CW @1064nm
  

  Cube beamsplitters offer the flexibility of a large range of coating types and different trade-offs between cost and power handling capability, as well as the convenience of near-zero beam deviation and right-angle splitting.  They cause fewer ghost images than plate beamsplitters. A durable all-dielectric partial reflection coating is used at the internal interface. All external four leg surfaces have anti-reflection coating for the specific wavelength. It is recommended to use them with collimated or near collimated input light for the best spectral performance and transmitted wavefront.
  The cemented cube beamsplitters can be used up to 1 J/cm² at 1064nm. The NEW Spectral Optics' Molecular Fusion™ bonding technology creates optically contacted units that are permanently bonded, with no cements or other substances to degrade coating performance. It allows to use them in very high energy/power laser application.

Product List:

1. Optical Cement: CBS-OC - λ  - R - Pol - Size - Material

CBS-OC-	λ (nm)	R (%)	POL	Size Code	Material	Price (USD)
	248, 257, 266, 308, 337, 355, 364, 400, 488, 532, 633, 670, 780, 800, 850, 980,1030, 1064, 1319, 1550, etc	20 (±5) 30 (±5) 40 (±5) 50 (±5) 60 (±5) 70 (±5) 80 (±5)	-S-, -P-, -U-	-050- (0.5")	-FS	$395
					-BK	$185
				-100- (1.0")	-FS	$495
					-BK	$270

2. Molecular Fusion:  CBS-MF - λ  - R - Pol - Size - Material

CBS-MF-	λ (nm)	R (%)	POL	Size Code	Material	Price (USD)
	248, 257, 266, 355, 364, 400, 532, 800, 1064, etc	20 (±5) 30 (±5) 40 (±5) 50 (±5) 60 (±5) 70 (±5) 80 (±5)	-S-, -P-, -U-	-050- (0.5")	-FS	$850
					-BK	$700
				-100- (1.0")	-FS	$1350
					-BK	$1025

EX, CBS-MF-1064-50-U-050-FS: Cube BeamSplitter with Molecular Fusion bonding, 1064nm, 50% (±5%) R, 45˚ Unpolarization, 0.5", Fused Silica.

NOTE:

1. The selection of the substrate material is dependent on the wavelength. Below 400nm, the UV fused silica is recommended.
   
2. Any other wavelength and R/T ratio can be supplied on request.
3. Please contact us to check up the availability for the molecular fusion bonding on the 1" size.
4. Please describe your custom requirements on the RFQ form.