PRODUCT

제품소개Optics

Optics

Prisms
Lenses
Windows
Mirrors

PHASE RETARDING MIRRORS

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ND:YAG MULTI-WAVELENGTH RMAX MIRRORS

Nd:YAG Multi-Wavelength RMAX Mirrors Provide high reflectance at both 1064 and 532 nm. Developed specifically for high power applications, these mirrors can handle YAG power levels in excess of 10 J/㎠.

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METAL MIRRORS (CONT.) INFRARED

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METAL MIRRORS UV/VIS/NIR

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BROADBAND RMAX MIRRORS

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LASER-LINE RMAX MIRRORS (CONT.) INFRARED

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LASER-LINE MAX MIRRORS UV/VIS/NIR

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MIRRORS

Mirrors are used in a wide range of beam steering, focusing and collimating applications. RMAX mirrors utilize multi-layer, dielectric thin films. Laser-Line RMAX Mirrors are designed for high reflectance at a single laser wavelength. High power coating designs are standard for select wavelengths. Broadband RMAX Mirrors provide high reflectance over a broad spectral range. They are also useful in narrowband applications in which it is necessary to vary the angle of incidence. Metal Mirrors are intended for applications involving lower power lasers, or broadband sources. They are less sensitive to wavelength, polarization, and angle of incidence than dielectric mirrors. Solid Metal Mirrors are well suited for use in high power infrared laser applications. Copper must be coated with protected gold or silver because it oxidizes very rapidly. Molybdenum is generally used uncoated. It is a very hard material that does not oxidize and has high reflectance above 3 μm. Substrates are available with plano/plano, plano/concave and plano/convex surfaces. Refer to the THIN FILM COATING section for coating information and specifications.

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BREWSTER WINDOWS

Brewster Windows are primarily used in laser cavities to produce a beam with a high degree of polarization purity. When unpolarized light is incident on an uncoated substrate at Brewster’s Angle, the reflected portion is completely S polarized and the transmitted portion is partially P polarized.
Multiple passes through the substrate Substantially reduce the S component in the transmitted beam, resulting in a highly P polarized output. multi-layer thin Film Polarizer coatings can be applied to these substrates to greatly improve efficiency and extinction ratio on a single pass through the substrate.

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LARGE WEDGE WINDOWS

Large Wedge Windows greatly reduce or eliminate interference effects caused by multiple reflections between the front and rear surfaces of plane windows. They are well suited for use as substrates for laser output couplers in which the reflection from the second surface must be completely eliminated from the gain medium of very sensitive lasers. A pair of identical wedges are used to create an adjustable beam steering device.

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PARALLEL WINDOWS

Parallel Windows are similar to Plane Windows, but with parallel surfaces. These windows are well suited for applications in which angular deviation of the transmitted beam must be kept as small as possible.
Misalignment errors are also minimized when the window is repeatedly inserted and removed.

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PLANE WINDOWS (CONT.) UV / VIS / NIR

UV / VIS / NIR

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PLANE WINDOWS

Plane Windows are used as substrates for a variety of applications, such as laser window, output couplers, beamsplitters, beam combiners, mirrors, dichroic filters, and plate polarizers. Considerations in selecting window substrates include transmission range, absorption coefficient, incident laser power density and environmental factors such as pressure, temperature, moisture, abrasion and corrosion. Plane Windows listed under UV / VIS / NIR substrates are specified for applications involving coating wavelengths 193nm ≤ λ〈2.0 μm. Units for these substrates are given in mm. Plane Windows listed under IR substrates are specified for applications involving coating wavelengths λ≥ 2.0 μm. Units for these substrates are given in inches.
Refer to the THIN FILM COATINGS section for information on coatings that can be applied to these substrates.

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MENISCUS LENSES

POSITIVE MENISCUS, NEGATIVE MENISCUS

Positive meniscus lenses are designed to minimize spherical aberration and are usually used in small fnumber applications
(f#〈2.5). For 2.5 f#〈10, meniscus lenses can also improve image quality and reduce spot size.

Negative Meniscus lenses are offered as an alternative to other negative lenses and are particularly appropriate for the high index IR materials. They are commonly used in beam expanding applications where minimal spherical aberration is desired.

MOS Meniscus Lenses are designed to customers requirements. Both sides can be coated with a MOS high efficiency narrowband, anti-reflective coating

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CYLINDRICAL LENSES

PLANO/CONCAVE, PLANO/CONVEX
Cylindrical lenses focus incoming light in one dimension only, such as in transforming a point image into a line image or changing the height of an image without changing its width or vice versa. MOS Lenses are designed at customer wavelength.
Additionally, both sides can be coated with an MOS high efficiency narrowband, anti-reflective coating. Square Cylindrical Lenses and Double Sided Aplanats are also available-call MOS for a quote.

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SPHERICAL LENSES

PLANO/CONVEX, PLANO/CONCAVE

Plano/Convex-Spherical lenses have a positive focal length and converge the incident light. This type of lens forms both real and virtual images. Real image-focused, Virtual Image-magnified.
Plano/Concave-Spherical lenses have a negative focal length and diverge incident light, this forms a virtual image seen through the lens. MOS has many standard lenses in stock or Lenses can be designed at customer’s requirements.
Both sides can be coated with a MOS high efficiency narrowband, anti-reflective coating.

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RIGHT ANGLE PRISMS

Right Angle Prisms are well suited for beam deviation and retro-reflection. They are often preferable to plane mirrors because they are easier to mount and align. High throughput is attained when the hypotenuse is used in total internal reflection (TIR), and the entrance and exit surfaces are anti-reflection coated. An incident beam normal to the entrance surface is reflected at a 90。angle. Images are inverted as illustrated in the drawing below. The hypotenuse may also be used in external reflection, in which case it is coated with a metal or dielectric, high reflectance coating. Right angle prisms may also be used for retro-reflection. A beam entering perpendicular
to the hypotenuse is reflected by the legs and emerges parallel to itself. If it is desirable to use either the hypotenuse or the legs in internal reflection mode, but field angle requirements exceed TIR acceptance limits, or if the environment in which the prism is to be used does not allow the hypotenuse to be kept sufficiently clean for TIR, a metal or dielectric coating can be applied to the hypotenuse.

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CORNER CUBE RETRO-REFLECTORS

Corner Cube Retro-Reflectors operate on the principle of total internal reflection (TIR). A beam entering the effective aperture is reflected by the three roof surfaces and emerges from the entrance/exit surface parallel to itself. This property is independent of the orientation of the retro-reflector within acceptance angle limitations. For applications in which either the acceptance angle for TIR is exceeded, or the reflecting surfaces cannot be applied sufficiently clean for TIR, a metal or dielectric coating can be applied to the reflecting surfaces.

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LITTROW PRISMS & PELLIN BROCA PRISMS

Pellin Broca prisms are used to disperse beams after harmonic generators and Raman shifters. MOS Pellin Broca prisms have been designed to provide low loss for P-polarization by changing the classical 75。angle to an angle between 77。and 88。, assuring beam incidence and exit almost exactly at the Brewster angle. Crystal quartz Pellin Broca prisms are recommended as dispersing elements for intense UV when other methods fail. The smaller Suprasil 1 PLBC-5.0-79.5-SS prisms have been specifically designed for separation of short UV from the small beams of frequency doubled excimer pumped dye lasers

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PORRO PRISM

Porro Prisms operate on the priciple of total internal reflection (TIR). A beam entering perpendicular to the entrance / exit surface is reflected by the two roof surfaces and emerges parallel to itself. For applications in which either the acceptance angle for TIR is exceeded, or the reflecting surfaces cannot be kept sufficiently clean for TIR, a metal or dielectric coating can be applied to the reflecting surfaces.

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