400-863-9100

LohnStar Optics,Inc.(美国)

www.lohnstaroptics.com

地址:
1863 Commercial Street Escondido, CA 92029 USA
电话:
760-489-7774
传真:
760-489-7747
产品:
相位延迟片  分束器  滤波器  增透膜  镜片 

公司简介

LohnStar Optics,Inc.自1997年以来,一直为医疗、研究、工业、军事和国防多种行业提供定制UV、Vis和IR薄膜涂层。涂层采用最新的计算机软件和最先进的优化技术进行设计。为制造和抛光合作伙伴合作提供成品光学元件,真空系统可容纳高达38英寸的光学元件,数量小且OEM。凭借20多年的经验和专业知识,能够满足客户的任何涂层需求。


CAPABILITIES


。Anti-Reflection

。Beam Combiners

。Beam Splitters

。Cavity Ring-Down Mirrors

。Metallic Mirrors

。Output Couplers

ANTI-REFLECTION COATINGS


LohnStar Optics started doing AR coatings for CO2 laser applications in 1997. We continue to provide world-class anti-reflection coatings for use at 10.6µm, but we have also found a niche in completely custom anti-reflection coatings for a wide variety of substrate materials. We have experience manufacturing AR coatings on all of the common substrate materials like ZnSe, Si, FuSi, and Ge as well as on most of the uncommon materials such as GaSb, InP, and Diamond. The range in which we can make AR coatings extends from 200nm-50µm. We also offer Ultra-Low Absorbing (ULA) AR Coatings.

Single Wavelength AR

Single Wavelength AR Coatings (sometimes called V-Coat) target one wavelength in order to improve throughput of an optical system. LohnStar can produce Single Wavelength AR Coatings from 300nm-20µm optimized for reflectance < 0.25%.

Dual-Band AR (DBAR)

Dual-Band AR Coatings target two wavelengths. Oftentimes these coatings will target a wavelength in the visible as well as a wavelength in the infrared.

Broadband AR (BBAR)

Broadband AR Coatings target an entire band of wavelengths. Specifications vary based on wavelength, angle of incidence, polarization, etc.

Ultra-Low Absorbing AR (ULA)

ULA Coatings are optimized for use at 10.6µm. They are manufactured with special materials and a unique process to achieve extremely low absorption (<0.12%)


BEAM COMBINERS

BE

Beam combiners combine two or more wavelengths of light — one in transmission and one in reflection — onto a single beam path. Common substrate materials for beam combiners include ZnSe, ZnS, and Ge. The most common beam combiner transmits an infrared beam such as 10.6µm and reflects a visible beam such as 633nm.



BEAM SPLITTERS


A beam splitter is an optical component that is used for splitting an incident light beam in two directions. Beam splitters are used to separate the light by a ratio of power between what is being transmitted through the optic and what is being reflected. Beam Splitters can also be used to separate polarization states as well as different wavelengths of light. Contact an expert at LohnStar Optics to help design and manufacture a thin film coating that meets your specific needs.

CAVITY RING-DOWN MIRRORS


Cavity ring-down mirrors are all-dielectric mirrors that are manufactured with a proprietary process to ensure ultra low losses due to scatter and absorption. These mirrors frequently have reflectivity above 99.99%. Losses due to scatter and absorption vary with respect to wavelength, but can be as low as ~10ppm.


METALLIC MIRRORS


Protected Metal Mirrors

Protected metal coatings consist of one layer of a highly reflective metal such as gold, copper, or silver with a dielectric overcoat to protect against oxidation and other potential damage. The protective layer also allows the mirror to be cleaned with solvents.

Protected Gold Protected Silver

Enhanced Metal Mirrors

Enhanced metal coatings consist of a layer of a highly reflective metal such as gold, copper, or silver plus a minimum of one pair of low and high index dielectric materials. These coatings enhance the reflectivity of the chosen metal and can be optimized to target virtually any wavelength in both the visible and infrared.

Spectral scan of an Enhanced Metal coating done at LohnStar Optics optimized for use at 6.8µm

Phase Retarding Mirrors (CO2)

Phase Retarders, also known as 90° Phase Shift Mirrors, are used to convert a linearly polarized beam to a circularly polarized beam. Our coatings are optimized for high power applications. Typical substrate materials are Silicon and Copper.

Standard Specifications:

Reflectivity @ 10.6µm > 99%

Phase Retardation: 90° ±3°

Zero Phase Shift Mirrors (CO2)

Zero Phase Shift Mirrors are used to maintain the polarization state of the incident beam (typically a circularly polarized beam). Our coatings are optimized for high power applications. Typical substrate materials are Silicon and Copper.

Standard Specifications for EM2:

Reflectivity @ 10.6µm > 99.6%

Absorption @ 10.6µm ≤ .20%

Phase Shift: 0° ± 2°



OUTPUT COUPLERS



Output Couplers (also called partial reflectors) are dielectric mirrors used in laser cavities to transmit a portion of the intracavity power. The backside surface is normally coated with an AR coating to minimize back surface reflection. Typical substrate materials for Output Couplers include ZnSe, YAG, Ge, CaF2, and FuSi.

PR 3% on InP

PR 97% on ZnSe



APPLICATIONS


LohnStar Optics, Inc. provides custom UV, Vis, and IR thin film coatings for a variety of industries including medical, research, industrial, military and national space defense applications. Our coatings are trusted by many of the largest defense contractors in the United States and used for research at numerous prestigious universities around the world. A partial list of the various applications for our coatings include:

  • Cavity Ring Down Spectroscopy

  • CO2 Lasers

  • Er:YAG Lasers

  • Lenses

  • Mirrors  

  • Optical Parametric Oscillators

  • Output Couplers

  • Phase Controllers

  • Polarizers

  • Quantum Cascade Lasers

  • Remote sensing

  • Space-based Laser Systems

  • Windows























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