Del Mar Photonics - Newsletter Fall 2010 - Newsletter Winter 2010

ZnSe window, ø 3.5 inch x 0.25 inch

Material: ZnSe optical grade
Diameter: 3.5 inch (+0.0/-0.004 inch)
Thickness: 0.250 inch (+/-0.004 inch)
Surface quality: 60/40 scr/dig
Parallelism: <= 5 arc minutes
Clear aperture: >= 90% of diameter
Coating: AR/AR at 10.6 microns

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Del Mar Photonics

ZnSe window, ø 25.4 mm x 3.0 mm

ZnSe optical grade
Type: circular plane window
Diameter: 25.4 mm (+0.0/-0.2 mm)
Thickness: 3 mm (+/-0.2 mm)
Surface quality: 60/40 scr/dig
Parallelism: 3 arc minutes
Clear aperture: 90% of diameter

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Del Mar Photonics supply infrared optics from other materials including ZnSe, Germanium, Barium Fluoride, Calcium Fluoride IR grade and many others. E-mail us for custom quote or check our online store for items available in stock.

New: ZnSe rhomb


 

ZnSe windows updates
ZnSe Windows for Infrared Laser. Windows for infrared light, allowing transmission of light at wavelengths from 600 nm up to around 20 μm. ...
CO2 Laser Windows - Zinc Selenide( ZnSe) is used for optical windows, lenses, mirrors and prisms particularly for infrared applications.
ZnS, ZnSe, and ZnS/ZnSe windows for FLIR system
CVD-formed ZnSe windows
adsabs.harvard.edu/abs/1986OptEn..25..519K - Similar pages
ZnSe Windows for FT-IR
Replacement Pair of ZnSe Windows for FTIR Liquid Autosampler.
ZnSe Windows and Lens for CO2 laser
High precision IR optics ZnSe windows and lens for CO2 laser
Zinc Selenide Optical Components
Very wide transmission range covering 0.6 to 20 Ám CVD grown ZnSe high optical quality material
Lasergrade ZnSe material.
Zinc Selenide (ZnSe) Windows/Lenses. Zinc based materials provide excellent IR transmission as well as some transmission in the visible.
Antireflective Coatings for GaAs and ZnSe Windows and Lenses
ZnSe Windows for Infrared Laser
In contrast to other optical materials for infrared light such as Ge (germanium), or Si (silicon), ZnSe windows allow transmission of some visible light.
Windows for applications in mid-infrared (MIR) solid-state ...
ZnSe windows for very different IR optics applications such as night vision systems, thermal imaging devices etc.
Optical Coatings for High Energy ZnSe Laser Windows
Znse Windows For Tg/Ir Gas Cell

ZnSe CVD laser grade windows, lens, beam splitters, filters etc. for lasers, FTIR and scientific research.
Laser Beam Delivery Components ...
ZnSe windows are used as end elements or protective windows. Similar to cutting lenses, they are made exclusively with high quality "laser grade" material.
ZnSe windows to be used with the FEANICS (Flow Enclosure Accommodating Novel Investigations in Combustion of Solids) ...
ZnSe Cylindrical lens

CaF2
 
 

 Model   Product Name+   Price   Buy Now 
 W-CF-25.4-3   CaF2 window, ø 25.4 mm x 3.0 mm  $149.00  Buy Now 
 W-CaF-40-7   CaF2 window, ø 40 mm x 7.0 mm   $450.00  Buy Now 
 W-CF-50.8-3   CaF2 window, ø 50.8 mm x 3.0 mm   $190.00  Buy Now 
 DSP-CF-15   Dispersion prism, IR grade CaF2, 15x15x15x10 mm   $150.00  Buy Now 
 more

 

Ge optics
 
 

 Model   Product Name+   Price   Buy Now 
 E-Ge-12.7-25.4   Ge etalon, ø 12.7 mm x 25.4 mm (ø 0.5" x 1")   $790.00  Buy Now 
 W-Ge-25.4-3   Ge window, ø 25.4 mm x 3 mm   $110.00  Buy Now 
 W-Ge-38.1-4   Ge window, ø 38.1 mm x 4 mm   $250.00  Buy Now 
 more

 

ZnSe

 Model   Product Name+   Price   Buy Now 
 PH-ZnSe-25.4-12.7   ZnSe hemicylindrical prism, 25.4 mm   $1,350.00  Buy Now 
 W-ZnSe-20-3   ZnSe window, ø 20, thickness 3 mm   $150.00  Buy Now 
 W-ZnSe-12.7-1   ZnSe window, ø 12.7 mm, thickness 1 mm   $90.00  Buy Now 
 W-ZnSe-25.4-3   ZnSe window, ø 25.4 mm, thickness 3 mm   $190.00  Buy Now 
 W-ZnSe-60-3-K   ZnSe window, ø 60 mm, thickness 3 mm, coated   $620.00  Buy Now 
 W-ZnSe-76.2-3-K   ZnSe window, ø 76.2 mm, thickness 3 mm, coated   $700.00  Buy Now 
More

 

 
BaF2 - Barium Fluoride

 

 Model   Product Name+   Price   Buy Now 
 WG-BF-25.4-10-1.55   BaF2 wedge, 25.4 mm x 10.0 mm x 1.55 mm   $129.00  Buy Now 
 WG-BF-25.4-10-2.1   BaF2 wedge, 25.4 mm x 10.0 mm x 2.1 mm   $129.00  Buy Now 
 WG-BF-25.4-10-2.5   BaF2 wedge, 25.4 mm x 10.0 mm x 2.5 mm   $129.00  Buy Now 
 W-BF-12.7-2   BaF2 window, ø 12.7 mm x 2.0 mm   $62.00  Buy Now 
 W-BF-4-0.5   BaF2 window, ø 4" x 0.5", polished, uncoated   $1,200.00  Buy Now 

 

Zinc Selenide (ZnSe) Components

Zinc Selenide (ZnSe) is the most popular material for infrared application. Due to very wide transmission range covering 0.6 to 20 m m CVD grown ZnSe high optical quality material is used to manufacture optical components (windows, mirrors, lenses etc.) for high power IR lasers.

Physical Properties

Crystal type cubic
Lattice constant       a=5.657Е
Density 5.27 g/cm3 at 25 C
Melting point 1525 C
Refractive index 2.417 - 2.385 @ 8 - 13 m m
2.40272 at 10.6 m m
Transmission band 0.6 to 20 m m
Bulk absorption coefficient 5 ґ 10-4 cm-1 @ 10.6 m m
Young's Modulus 6.72 ґ 109 dynes/mm2
Specific Heat at 25 C 0.085 ca/g C
Linear thermal expansion 7.57 ґ 10-6 / C at 20 C

General Specifications of Zinc Selenide Optical Components

Material ZnSe
Surface Quality 40-20 scratch & dig
Clear aperture 90% of diameter
Diameter tolerance +0.0, -0.1 mm
Thickness tolerance +0.1, -0.25 mm
Surface Irregularity l /2 per inch @ 633 nm over clear aperture
Coatings Typical available coatings for ZnSe include BBAR for 0.8 to 2.5Ám, 3 to 5Ám, 1 to 5Ám, 8 to 12Ám, and the 3 to 12Ám spectral regions and single wavelength AR coating  at 10.6Ám RЈ 0.5% per surface. Many other specialized wavelength bands are possible within the 0.6 to 16Ám range.

 

Standard ZnSe windows (uncoated) 

Diameter, mm

Thickness, mm

Cat.-No

12.5 (or 0.5")

2.0

40701

25.0 (or 1")

3.0

40703

40.0 (or 1.5")

4.0

40705

50.0 (or 2")

5.0

40707

 

Zinc Selenide custom made windows, lenses, Brewster windows, mirrors, beamsplitters and other components are available on request.

Zinc selenide most obvious and important advantage over other materials is its low absorption in the red end of the visible spectrum. This allows the ubiquitous helium neon laser to be used as a convenient and inexpensive alignment or sighting tool for infrared laser beams. Prealignment of optics may be necessary merely because the infrared beam is invisible to the eye, or in addition because the infrared laser beam is of such a high energy misdirected laser beam can be extremely dangerous to equipment or personnel.

Although zinc selenide has this clear advantage over silicon and germanium, unfortunately it is not an easy material from which to produce optics. Firstly, it is not a naturally occurring material and has to be synthesized using a difficult process (CVD). Secondly, the dust, which is generated when zinc selenide is ground and polished constitutes a significant health hazard as a cumulative toxin. Also, it is not a particularly hard substance and scratches easily.

Refractive Index

Wavelength, Ám

2.75

5.00

7.50

9.50

11.0

12.5

13.5

15.0

16.0

16.9

17.8

18.6

19.3

20.0

Refractive Index

2.44

2.43

2.42

2.41

2.40

2.39

2.38

2.37

2.36

2.35

2.34

2.33

2.32

2.31

 

Transmission

Although the internal transmittance of zinc selenide is very high (absorption <= 0.0005cm-1 at 10.6mm), the relatively high refractive index (2.4 at 10.6m m) cause reflection losses of nearly 30%. Unless such losses can be tolerated, zinc selenide optics should always be antireflection coated. Because of the high refractive index, single and double layer antireflection coatings can be very effective.

Zinc selenide is not hygroscopic unlike certain salts which are used for windows in the infrared.

Del Mar Photonics - Greyhawkoptics - Infrared Optics from Del Mar Photonics

            

 

Infrared Technology: Applications to Electro-Optics, Photonic Devices and Sensors
A. R. Jha

 A complete reference guide to the theory, design, and applications of infrared technology

Rapid advances in infrared (IR), photonic, and electrooptic technologies have given rise to sophisticated sensors with important commercial, industrial, and military applications-from remote sensing, surveillance, and high-resolution TV to home security systems. This book provides scientists and engineers with a comprehensive, state-of-the-art guide to the analysis and development of IR, photonic, and electrooptical devices and systems for specific applications. Well-known industry expert A. R. Jha compiles and consolidates the latest data on IR sources and systems, presenting fully referenced technical information plus numerical examples illustrating performance parameters and design aspects for an amazingly broad array of applications. Basic IR theory is also provided. Coverage includes:
* Transmission characteristics of optical signals through the atmosphere, including effects of scattering, absorption, turbulence, and diffraction
* Performance characteristics and capabilities of various IR sources, including state-of-the-art laser technologies
* Performance capabilities of IR detectors and focal planar arrays (FPAs) as well as passive and active IR and electronic devices
* Potential and existing applications in such diverse fields as medicine, telecommunications, space research, missile systems, and defense IR signature analysis and measurement techniques
From the Back Cover
A complete reference guide to the theory, design, and applications of infrared technology

Rapid advances in infrared (IR), photonic, and electrooptic technologies have given rise to sophisticated sensors with important commercial, industrial, and military applicationsľfrom remote sensing, surveillance, and high-resolution TV to home security systems. This book provides scientists and engineers with a comprehensive, state-of-the-art guide to the analysis and development of IR, photonic, and electrooptical devices and systems for specific applications. Well-known industry expert A. R. Jha compiles and consolidates the latest data on IR sources and systems, presenting fully referenced technical information plus numerical examples illustrating performance parameters and design aspects for an amazingly broad array of applications. Basic IR theory is also provided. Coverage includes:

* Transmission characteristics of optical signals through the atmosphere, including effects of scattering, absorption, turbulence, and diffraction
* Performance characteristics and capabilities of various IR sources, including state-of-the-art laser technologies
* Performance capabilities of IR detectors and focal planar arrays (FPAs) as well as passive and active IR and electronic devices
* Potential and existing applications in such diverse fields as medicine, telecommunications, space research, missile systems, and defense
IR signature analysis and measurement techniques

Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
absorption region thickness, electrooptic technology, optical commutator, detection range capability, radiance contrast, various jet engines, pump beam diameter, using optical technology, domain detectors, peak radiation wavelength, most critical performance parameter, spectral radiant exitance, high mechanical integrity, precision weapon delivery, photonic sensors, critical performance parameters, thermal blooming, peak radiation intensity, severe operating environments, radiance level, critical performance requirements, optic size, high detection probability, afterburner operation, spectral radiant emittance
Key Phrases - Capitalized Phrases (CAPs): (learn more)
Laser Focus World, Photonics Spectra, The Infrared Handbook, Commercial Engineering, Electro-Optics Handbook, Newport Corp, Aerosol Clear Hazy Height, Halogen Osram, New York, Optoelectronics World, Unit Symbol Notes, Applied Optics, Superconductor Technology, Technical Report

 

            

Infrared Detectors and Systems (Wiley Series in Pure and Applied Optics)
E. L. Dereniak (Author), G. D. Boreman (Author)

Product Description
This text covers the range of subjects necessary for the understanding of modern infrared-imaging systems at a level appropriate for seniors or first-year graduate students in physics or electrical engineering. The first six chapters focus on fundamental background issues of radiation detection, beginning with the basics of geometrical optics and finishing with a discussion of the figures of merit used for describing the signal-to-noise performance of a detector system. Other topics include radiometry and flux-transfer issues, basic radiation-detector mechanisms, and random-process mathematics.

The presentation then moves on to specific detector technologies and the fundamental mechanisms of detection, paying special attention to responsivity and noise performance. Devices discussed include photovoltaic detectors, photoconductive detectors, thermal detectors, Schottky-barrier diodes, and bandgap-engineered photodetectors via multiple quantum wells and superlattices.

The book concludes with a close look at infrared detection systems and related issues. In the discussion of infrared search systems, the range equation is developed in terms of the optical and detector parameters of the system. A separate chapter is devoted to modulation transfer function, a spatial-frequency-domain description of image quality. The final chapter describes the design equations for thermal-imager systems in terms of noise-equivalent temperature difference and minimum resolvable temperature.

Supported and clarified by 470 illustrations and accompanied by an extensive glossary of the nomenclature, this is an excellent text for graduate and senior level courses in radiometry and infrared detectors. It is also a valuable reference for practicing engineers involved in the use, design, analysis, and testing of infrared detector-based systems.

Infrared Detectors and Systems is a complete, accessible, and timely exposition of a technology whose applications are increasingly important and widespread. Based on courses presented by two of the field's leading figures, this book provides extensive coverage of the background and fundamentals of radiation detection and goes on to examine specific technologies and systems in depth and, in some cases, for the first time in print.

Technologies discussed include

* Photovoltaic detectors
* Photoconductive detectors
* Thermal detectors
* Schottky-barrier diodes
* Bandgap-engineered photodetectors via multiple quantum wells and superlattices

Supplemented with 470 illustrations and a complete glossary of the nomenclature, this is the ideal text for senior- and graduate-level courses in radiometry and optical detection.
From the Publisher
Two acknowledged authorities in the field describe the optical detection process and electronics involved in mimicking the eye. Provides a detailed overview of optical sensors and systems, remote sensing, superlattices, and the electrical characteristics of various detectors. Covers recent research in new detector materials and advances in cutting-edge optical detectors.

Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
photon exitance, blackbody responsivity, blackbody exitance, optical radiation incident, superconducting transition region, background irradiance, external transmittance, optically active area, fixed frame time, photon radiance, readout region, detector resistance, mirror membrane, staring system, spectral exitance, voltage responsivity, photoconductive gain, current responsivity, extrinsic photoconductors, afocal telescope, photon irradiance, nonideality factor, photovoltaic detector, normalized detectivity, superconducting bolometer
Key Phrases - Capitalized Phrases (CAPs): (learn more)
New York, Academic Press, Infrared Physics, Elements of Infrared Technology, Optical Engineering Press, The Infrared Handbook, Quantum-Well Infrared Photodetectors, Englewood Cliffs, Infrared System Engineering, John Wiley, Modern Optical Engineering, Prentice Hall, Wien Displacement Law, Milestone Series, Modern Physics, Oxford University Press, Physics of Semiconductor Devices, Bell Syst, Electron Devices, Epitaxial Multilayers, Infrared Design, Infrared Technology Fundamentals, Optical Radiation Measurements, Quantum Well Infrared Photodetectors, Solid State Electronic Devices

 

 

Need infrared optics? Send us your inquiry for custom quote!

or check our online store

Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics
sales@dmphotonics.com