United photonics Technology
Diffusion Bonded Crystal
Bonding (Diffusion bonded) crystals consist of one laser crystal and one or two undoped material. They are combined by optical contact method and further bonded under high temperature. Diffusion Bonded Crystal helps to decrease thermal lens effect considerably.
UPT can supply various standard assembly types as follows:
Material
Doping concentration(atm) or Optical Density(cm-1)
Aperture (mm)
Length of laser crystal(mm)
YVO4+ Nd:YVO4 + YVO4
0.1%-3%
1x1-20x20
0.15-30
�¦2-15
YAG+Nd:YAG+ YAG
0.1%-2.5%
1x1-20x20
0.125-200
�¦2-15
YAG+Nd:YAG+Cr4+:YAG
0.1%-2.5% / 0.6~7
1Ã??1-20Ã??20
0.125-200
�¦2-15
YAG+Nd:Ce:YAG+ Cr4+:YAG
0.6~7
1Ã??1-20Ã??20
0.125-200
United photonics technology
BBO Crystal (Beta-Barium Borate Crystal)
BBO crystal is an important nonlinear optical crystal with combination of unique optical properties. Broad transmission and phase matching ranges, large nonlinear coefficient, high damage threshold and excellent optical homogeneity provide attractive possibilities for various nonlinear optical applications.
UPT offers BBO specification:
LBO Crystal (Lithium Triborate Crystal)Note: OEM Dimension, different axis angle cutting and coating and damage threshold upon request others are available upon request.
LBO crystals is an excellent nonlinear crystal. For frequency doubling(SHG),tripling(THG) of Nd:YAG,Nd:YLF,Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications.
Advantages:
broad transparency range from 160nm to 2600nm (see Figure 1);
high optical homogeneity (�´nâ??10-6/cm) and being free of inclusion;
relatively large effective SHG coefficient (about three times that of KDP);
wide acceptance angle and small walk-off;
type I and type II non-critical phase matching (NCPM) in a wide wavelength range;
spectral NCPM near 1300nm.
high damage threshold(18.9 GW/cm 2 for a 1.3ns laser at 1053nm);
LBO has the highest damage threshold in all the commonly-used inorganic NLO crystals. Therefore, it is the best candidate for high average power SHG and other nonlinear optical processes.
â?¢ SHG, THG of Nd lasersLBO's main applications
â?¢ SHG of Ti:Sapphire, Cr:LiSAF and Alexandrite lasers
OPA and OPO
UPT offer LBO specification:
Note: OEM Dimension, different axis angle cutting and coating and damage threshold upon request, others are available upon request.
United photonics technology
United photonics technology
Glan Taylor Polarizer
Glan Laser Polarizers
High Transmission Glan Laser Polarizers
Glan Thompson Polarizers
Broadband Glan Thompson Polarizer( 200-3300nm)
Wollaston Polarizers
Rochon Polarizers
Glan Laser prism polarizer is made of two same birefringent material prisms that are assembled with an air space. The polarizer is a modification of the Glan Taylor type and is designed to have less reflection loss at the prism junction. The polarizer with two escape windows allow the rejected beam to escape out of the polarizer, which makes it more desirable for high energy lasers. The surface quality of these faces is relatively poor as compared to that of entrance and exit faces. No scratch dig surface quality specifications are assigned to these faces. The polarized field F1 and F2 of these is shown in the plot below.
Features:
Air-spaced
Close to Brewster's Angle Cutting
High Polarization Purity
Short Length
Suitable for low to medium power online_ordering where the rejected beam is not required
Specifications:
Material:a -BBO, Calcite or YVO4
Wavelength Range:a -BBO: 200-3500 nm, Calcite: 350-2300 nm, YVO4: 400-5000 nm
Extinction Ratio:Calcite:
United photonics Technology
Zero Order Waveplate-Optically Contacted
Optically Contacted zero order waveplate is constructed by two quartz plates with their fast axis crossed, the two plates are constructed by optically contacted method, the optical path is epoxy free. The difference in thickness between the two plates determines the retardation. Zero order waveplates offer a substantially lower dependence on temperature and wavelength change than multi order waveplates.
Optically Contacted
Thickness 1.5~2mm
Double Retardation Plates
Broad Spectral Bandwidth
Wide Temperature bandwidth
Hight Damage Threshold
Specifications:
Material:Quartz
Diameter Tolerance:+0.0, -0.1mm
Wavefront Distortion :8 @ 632.8nm
Retardation Tolerance:300
Parallelism:90%
Coating:S1&S2: R
Achromatic Waveplate
Unlike standard waveplates, Achromatic Waveplates, provide a constant phase shift independent of the wavelength of light that is used.This wavelength independence is achieved by using two different crystalline materials to yield quarter- or half-wave retardation over a broad spectral range.The Retardation tolerance of our AWPs is better than /100 over the entire wavelength range.The flat response of an AWP is ideal for use with tunable lasers,multiple laser-line systems and other broad spectrum sources.
Capability
MATERIAL Crystal Quartz&MgF2 Crystal
Dimension Tolerance +0/ -0.2mm
Wavefront Distortion /4@632.8nm
Retardation Tolerance
United Photonics Technology
Waveplates
Principle Application 4 Waveplate
UPT quarter waveplates create a quarter-wavelength phase shift 2, 90 and can convert linear polarization to circular polarization and vice versa. They are often used with a linear polarizer to form an isolator, blocking light reflected back from other surfaces (ellipsometry, optical pumping, isolation).
UPT half waveplates retard one polarization direction by half a wavelength 180, effectively changing the direction of linear polarization, depending on the orientation of incident linear polarization with respect to the crystal axis. Therefor they can be used as continuously adjustable polarization rotators e.g. in electro optical modulation or as a variable beam splitter when used in combination with a polarizing beam splitter.
Achromatic Waveplate
Unlike standard waveplates, Achromatic Waveplates, provide a constant phase shift independent of the wavelength of light that is used.This wavelength independence is achieved by using two different cr..
Zero Order Waveplate-Cemented by Epoxy
The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performances than multiple order waveplates, it has broad ban..
Zero Order Waveplate-Optically Contacted
Optically Contacted zero order waveplate is constructed by two quartz plates with their fast axis crossed, the two plates are constructed by optically contacted method, the optical path is epoxy free...
Zero Order Waveplate -Air-spaced
Air spaced zero order waveplate is constructed by two quartz plates installed in a mount, to form a air gap between the two quartz plates. The difference in thickness between the two plates determines..
True Zero Order Waveplate
Broad Spectral Bandwidth Wide Temperature Bandwidth Wide Angle Bandwidth Cemented by Expoy Specifications: Material: ..
Low Order Waveplate
Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order wave..
Dual Wavelengths Waveplate
Single retardation plate Dual-wavelength AR coated, R0.2% foundational wavelength R0.5% SHG wavelength Specifications Material: ..
Penta Prisms / Beamsplitter Penta Prism / Wedge / Right Angle Prisms / Corner Cube Retroreflectors / Anamorphic Prisms / Dove Prisms / Rhomboid Prisms /
Reflection Prism / Dispersion Prisms
Penta Prisms
Penta prism can deviate an incident beam without inverting or reversing to 90.The deviation angle of 90 is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces. It is commonly used in Plumb Level, Surveying, Alignment, Range finding and Optical Tooling. The reflecting surfaces of this Prism must be coated with a metallic or dielectric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum.
Specifications:
Material: BK7 Grade A Optical Glass
Dimension (mm): 2.5x2.5 ~ 100x100
Dimension Tolerance (mm): +/-0.2 (General), +/-0.05 (High Precision)
90 Deviation Tolerance: 1 arc min.(General),3 arc sec.(High Precision)
Angle Tolerance: 3 arc min. (General), 3 arc sec. (High Precision)
Surface Quality 80/50 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm) (General),/8 (High Precision)
Reflection: 90%@400-700nm
Note:
(1). Besides N-BK7 glass, other optical glass is available for custom-made Penta Prisms.
(2). Penta Prism at bigger size is available.
(3). Typical deviation tolerance is 1 minute, better precision such as 30 sec, 10 sec, 5 sec or 3 sec is available.
(4). Typical reflection is >90% by Al coating, other metal coating such as Ag, Cu, or High Reflection Dielectric Coating is available.
(5). Besides uncoating, Anti-Reflective(AR) coating is available upon request.
United photonics Technology
United Photonics Technology, Inc.-ISO9001 Company
Mirror
Mirror is a reflecting surface that forms an image of an object when light rays coming from that object fall upon it. Usually mirrors are made of plate glass, one side of which is coated with metal or some special preparation to serve as a reflecting surface.
UPT offers dielectric coated mirrors and metal coated mirrors which are made of substrate such as Bk7, K9, Fused Silica, CaF2, Sapphire.
Specifications:
Material: BK7 Grade A Optical Glass or other material,
Typical Diameter (�¦mm)
8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8
Typical Thickness (mm)
2.0, 3.5, 5.0, 6.5
Diameter Tolerance (mm) +/-0.2 (General), +0.0/-0.02 (High Precision)
Thickness Tolerance (mm) ±0.2 (General), ±0.05 (High Precision)
Clear Aperture >80% (Small Size), >95% (Large Size)
Parallelism 6 min. (General), 3 sec. (High Precision)
Surface Quality 80/50 (General), 10/5 (High Precision)
Flatness (per 25mm@633nm)
(General), /10 (High Precision)
Bevel (face width x 450)
Corner Cube Retroreflectors
Corner Cube Prism is also called Retroreflector or Trihedral Prism. In the Corner Cube Prism, three reflecting surfaces are perpendicular to each other, like the side wall of the cube. The input surface is perpendicular to the cube diagonal. Disregarding the angle of incidence, the output beam is parallel to the input one, but it is of opposite direction. Inset of the several corner prisms, for better matching, their entrance-exit surface is often hexagonal. In case of this prism the phenomenon of full internal reflection occurs so it is not necessary, (however it is possible) to put mirror coating on the reflecting faces. Normally the reflection surfaces are Al reflection coating, and then covered with Cu and Black Painting.
Specifications:
Material:
BK7 Glass
Dimension Tolerance (mm):
0.2 (General), 0.1 (High Precision)
Deviation:
180 3 arc secs
Flatness (per 25mm 633nm):
2(General), 10 (High Precision)
Clear Aperture:
80% (small size),90%(large size)
Surface Quality:
60/40 (General), 10/5 (High Precision)
Bevel (mm):
0.1-0.5
Coating on input and output sides:
Note for corner cube retroreflector:
(1). Besides N-BK7, custom-made corner cube Prisms made of other optical materials are available.
(2). Corner Cube Prisms with lower deviation tolerance, such as 1, 30, or 10, are available.
(3). Corner Cube Prisms with better surface Quality (better than 40/20 or 20/10) are available.
(4). HR or Metal reflection coating(Al, Ag, Cu, etc.) on reflection surfaces is available.
(5). AR coating on input/output surface is available upon request.
(6).Custom-made non-standard Corner Cube Prisms at any other size are available upon request.
Glan Laser Polarizers
Glan Laser prism polarizer is made of two same birefringent material prisms that are assembled with an air space. The polarizer is a modification of the Glan Taylor type and is designed to have less reflection loss at the prism junction. The polarizer with two escape windows allow the rejected beam to escape out of the polarizer, which makes it more desirable for high energy lasers. The surface quality of these faces is relatively poor as compared to that of entrance and exit faces. No scratch dig surface quality specifications are assigned to these faces. The polarized field F1 and F2 of these is shown in the plot below.
Angular Field vs Wavelength
a -BBO, 200-300nm
a -BBO, 300-700nm
a -BBO, 700-3000nm
Calcite, 350-2300nm
YVO4, 500-4000nm
Features:
Air-spaced
Close to Brewster's Angle Cutting
High Polarization Purity
Short Length
Suitable for low to medium power online_ordering where the rejected beam is not required
Specifications:
Material: a -BBO, Calcite or YVO4
Wavelength Range: a -BBO: 200-3500 nm, Calcite: 350-2300 nm, YVO4: 400-5000 nm
Extinction Ratio: Calcite:
