Del Mar Photonics

Featured inquiry:

I am looking for a BaF2 viewport that contains a Flange (prefer O-ring stainless flange) and a BaF2 window (at least 2" view diameter, preferably larger). This viewport is for a gaseous chamber (maybe 1-2 atm pressure) and I would like to view inside from the port with a IR camera. Could you please let me know if you have any product that meet my needs?

Request a quote for BaF2 viewport


Vacuum viewport

Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance. Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex. Standard Viewing diameters from .55" to 1.94 ".
Coating - a range of custom coatings can applied - which include
- Single QWOT
- Broad Band AR
- V coatings
- ITO
- DLC (Diamond like coating)

more details - request a quote

 

Vacuum viewports

Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance.
When you send us your inquiry please fill out the following form to indicate all important specifications and e-mail it to us with your inquiry.

Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control.



Windows Materials include:
Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex



Coating - a range of custom coatings can applied - which include
- Single QWOT
- Broad Band AR
- V coatings
- ITO
- DLC (Diamond like coating)
 

 

 

Featured customer:
Chang Liu
Professor of Mechanical Engineering
Professor of Electrical Engineering and Computer Science

Dept. of Mechanical Engineering
Northwestern University
2145 Sheridan Road, Room L288
Evanston, IL60208, USA

BS Precision Instrument, Tsinghua University, 1990
MS Electrical Engineering, Caltech, 1991
PhD Electrical Engineering, Caltech, 1996

Research: Micro and Nano Technology
Honors and Awards

Fellow, IEEE (Institute of Electrical and Electronics Engineers), 2010
Willett Faculty Scholar Award, College of Engineering, University of Illinois, 2005-2009
Faculty Associate, Center for Advanced Studies, University of Illinois
Xerox Award for Faculty Research, College of Engineering, University of Illinois, 2004
UIUC Incomplete List of Teachers Ranked as Excellent, Fall 2001
National Science Foundation, CAREER Award for young investigators, 2000
Ou-You Yi Award, 1996
Research

Chang Liu's research group conducts interdisciplinary research at the interface of mechanical engineering, electrical engineering, biology, and materials. Our group's primary research expertise and endeavors lie in the following areas: microfabrication technology, nanofabrication, bioinspired sensors, and smart integrated systems.

Our group develops novel and efficient fabrication technologies at the microscale and the nanoscale. Often we involve both traditional semiconductor materials as well as non-conventional polymer materials. We focus on developing MEMS, as well as nanofabrication and nanopatterning technologies. Further, we apply the micro- and nanoscale fabrication expertise to enable new devices and, in turn, new systems and applications.

We are developing biologically inspired sensors - sensors with functions and/or structures based on inspiration from biology. Biology offers exquisite examples of sensors and sensory intelligence. These have been the subjects of observation of biology for hundreds of years. With the advent of micro and nanotechnology, it now becomes possible to build engineering-equivalent of biological sensors. Through bioinspired sensors research, we seek to advance engineering as well as deepen understanding of complex biological systems.

Professor Liu's multidisciplinary research program centers on MEMS and devices. His research covers wide length scales (from nano to micro to macro) and is vertically integrated (materials to devices to systems).
For example, our group is developing artificial haircell sensors that mimic the haircell sensor, widely found in many animals and perform a large variety of functions. The biological haircell, a common neuronal mechanoreceptor, is responsible for a wide variety of sensing in different animal species. Haircells are responsible for hearing (human cochlea), flow sensing (insects, spiders, and fish), vibration sensing (insects), equilibrium sensing (human inner ear), and joint angle sensing (insect), to name a few examples. We are developing artificial hairs using microfabrication technology and investigating methods of increasing their functionality, increasing performance, and reducing packaging complexity.

In addition, my group is developing massively parallel scanning probe based nanolithography technology and microfluid lab-on-chip systems for nanofabrication and biochemical detection. We work closely with faculty members at the international institute of nanotechnology.

In the Classroom

Prof. Liu is passionate about teaching and mentoring undergraduate and graduate students to reach full potentials and become future leaders. He teaches in both Electrical Engineering and Mechanical Engineering areas. The courses he has covered in the past include solid-state devices, thermal transfer, electromagnetic waves, microfabrication, and MEMS. He is the author of a undergraduate textbook "Foundations of MEMS", published by Prentice-Hall in 2006. At Northwestern, he is planning to teachclasses on microfabrication/MEMS (in Mechanical Engineering) and on electronics circuits (Electrical Engineering and Computer Science).

Selected Publications

Yingchen Yang, Jack Chen, Jonathan Engel, Saunvit Pandya, Nannan Chen, Craig Tucker, Sheryl Coombs, Douglas L. Jones, and Chang Liu, "Distant Touch Hydrodynamic Imaging with an Artificial Lateral Line", The Proceedings of the National Academy of Sciences, Vol. 103, No. 50, pp. 18891-18895, 2006.

Saunvit D Pandya, Yingchen Yang, Douglas Jones, Jonathan M Engel, and Chang Liu, "Multisensor Processing Algorithms for Underwater Dipole Localization and Tracking using MEMS Artificial Lateral Line Sensors" EURASIP Journal on Applied Signal Processing, (Special issue on multi sensor processing for signal extraction and applications).

J. Engel, J. Chen, C. Liu, D. Bullen, "Polyurethane rubber all-polymer artificial hair cell sensor", IEEE/ASME Journal of MEMS, Vol. 15, No. 4, pp. 729-736, 2006.

Chang Liu, Foundations of MEMS, Prentice Hall, August 2005.

J. Engel, J. Chen, Z. Fan, and C. Liu, "Polymer Micromachined Multimodal Tactile Sensors," Sensors and Actuators A: Physical, vol. 117, no. 1, pp. 50-61, January 3, 2005.

Z. Fan, J. Engel, J. Chen, and C. Liu, "Parylene Surface Micromachined Membranes for Sensor Applications," IEEE/ASME Journal of Microelectromechanical Systems, 13(3), pp. 484-490, 2004.

J. Chen, Z. Fan, J. Zou, J. Engel, and C. Liu, "Two Dimensional Micromachined Flow Sensor Array for Fluid Mechanics Studies," Journal of Aerospace Engineering, Vol. 16, No. 2, pp. 85-97, pp. 1067-1075, April 2003

Sung-Hoon Kim, Jonathan Engel, Chang Liu, and Douglas L. Jones, "Texture classification using a polymer-based MEMS tactile sensor" Journal of Micromechanics and Microengineering, 15 (2005) 912-920.

Xuefeng Wang and Chang Liu, "Multifunctional probe array for nano patterning and imaging," Nano Letters, Vol. 5, No. 10, pp. 1867-1872, Oct 2005.

Kashan A. Shaikh, Kee Suk Ryu, Edgar D. Goluch, Jwa-Min Nam, Juewen Liu, C. Shad Thaxton, Thomas N. Chiesl, Annelise E. Barron, Yi Lu, Chad A. Mirkin, Chang Liu, "A Modular Microfluidic Architecture for Integrated Biochemical Analysis," PNAS, vol. 102, no. 28, pp. 9745-9750, July 2005.
 

 

Del Mar Photonics featured components

Del Mar Photonics continuously expands its components portfolio.


 
Solar Prisms for Concentrating Photovoltaic Systems (CPV)
Solar cells made of compound semiconductors such as gallium arsenide are very expensive. Usually very small cells are installed and various means such as mirrors, lenses, prisms, etc..are used  to concentrate sunlight on the cells. Concentration photovoltaic technology (CPV) uses the solar radiation with an efficiency of 40%, double that of conventional solar cells
Del Mar Photonics design custom Concentrating Photovoltaic Systems (CPV) and supply variety of the optical components for CPV such as solar prisms shown in the picture.
 

hexagonal light pipes, optical rods


 
Axicon Lens
Axicon lens also known as conical lens or rotationally symmetric prism is widely used in different scientific research and application. Axicon can be used to convert a parallel laser beam into a ring, to create a non diffractive Bessel beam or to focus a parallel beam into long focus depth.
Del Mar Photonics supplies axicons with cone angles range from 130?to 179.5?for use with virtually any laser radiation. We manufacture and supply axicons made from BK7 glass, fused silica and other materials.

download brochure -
request a quote
Del Mar Photonics offers optical elements made of high quality synthetically grown Rutile Titanium Dioxide crystals. Rutile (TiO2) coupling prisms
Del Mar Photonics offers optical elements made of high quality synthetically grown Rutile Titanium Dioxide crystals. Rutile抯 strong birefringency, wide transmission range and good mechanical properties make it suitable for fabrication of polarizing cubes, prisms and optical isolators. Boules having high optical transmission and homogeneity are grown by proprietary method. Typical boules have 10 - 15 mm in dia. and up to 25 mm length. Optical elements sizes - from 2 x 2 x 1 mm to 12.7 x 12.7 x 12.7 mm. Laser grade polish quality is available for finished elements. So far we the largest elements that we manufactured are 12 x15 x 5 mm, in which optical axis is parallel to 15 mm edge, 5 mm is along beam path, 12 x 15 mm faces polished 20/10 S/D, one wave flatness, parallelism < 3 arc.min. (better specs. available on request).

more details - download brochure -
request a quote

Sapphire components
Sapphire Circular Windows - Square & Rectangle - Rods
Sapphire & Ruby Rings - Sapphire & Ruby Balls - Sapphire & Ruby Nozzles
Sapphire Lenses - Ball & Seat - Special Products - Sapphire Vee & Cup Jewels
Sapphire Ceramics - Ceramic Sleeves - Ceramic Holes - Ceramic Rods
Sapphire & Ruby Orifices - Sapphire & Ruby Tubes - Sapphire Components
Sapphire Half Round Rod - Sapphire Windows - Rods & Tubes - Special Part
Sapphire Prism - Sapphire Chisel -
Sapphire Square Rod

Vacuum viewport

Del Mar Photonics offer a range of competitively priced UHV viewports , Conflat, ISO or KF including a variety of coatings to enhance performance. Del Mar Photonics viewports are manufactured using advanced techniques for control of special and critical processes, including 100 percent helium leak testing and x-ray measurements for metallization control. Windows Materials include: Fused silica, Quartz , Sapphire , MgF2, BaF2, CaF2, ZnSe, ZnS, Ge, Si, Pyrex. Standard Viewing diameters from .55" to 1.94 ".
Coating - a range of custom coatings can applied - which include
- Single QWOT
- Broad Band AR
- V coatings
- ITO
- DLC (Diamond like coating)

more details - request a quote

 

NARROW-BAND HOLOGRAPHIC FILTERS are intended for suppression of powerful beams in research and in engineering, in particular, in laser spectroscopy, and also for protection from blinding and damaging by laser radiation various photo receiver devices and operator's eyes.

Unlike conventional interference filters, which are made by vacuum evaporation techniques, holographic filters are fabricated by recording interference patterns formed between two mutually coherent laser beams. Since all layers are recorded simultaneously within a thick stack, the optical density of the notch filter is high and its spectral bandwidth can be extremely narrow. Also, since the layering profile is sinusoidal instead of square wave, holographic notch filters are free from extraneous reflection bands and provide significantly higher laser damage thresholds.

 

 

Hydrogen Thyratrons are used in such devices as radars with different power levels, high-power pulsed technical, electrophysical, medical devices and lasers. Sophisticated design and high quality ceramic-metal envelope determines long lifetime and very accurate and reliable operation of hydrogen thyratrons under wide range of environmental conditions.
Applications:
- radars
- pulsed  lasers power supplies
- medical apparatus
- electrophysical instrumentation

Triggered Three-Electrode Spark Gap Switches are ceramic-metal sealed off gas discharge trigatron-type devices with a co-axial trigger electrode. These Gas Discharge Tubes contain no mercury and, due to an advanced design, feature high reliability and a long lifetime being operating under wide range of environmental conditions.
Applications:
- pulsed installation for processing materials
- installations with plasma focus
- pulse power supplies for lasers and other pulse equipment
- medical apparatus such as lithotriptors and defibrillators
- processing systems for petroleum wells

 

Trigger Transformers
Del Mar Photonics supply trigger transformers for triggered spark gaps and other applications. Contact us to today to discuss your application or requesta  quote.
Trigger Transformers are used to provide a fast high voltage pulse up to 30kV/祍 and more. This high voltage pulse is applied to the trigger electrode to initiate switching action in the three-electrode spark gaps. Either positive or negative pulses can be obtained from all of the transformers.

 

We are looking forward to hear from you and help you with your optical and crystal components requirements. Need time to think about it? Drop us a line and we'll send you beautiful Del Mar Photonics mug (or two) so you can have a tea party with your colleagues and discuss your potential needs.

 

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

 

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