Del Mar Photonics

Del Mar Photonics offers Pellin Broca prisms in a number of sizes and materials. Request a quote

Customer testimonial:
Last year your company provided two custom Pellin Broca prisms for our research project. These optical components are performing very well.

We now need a third Pellin Broca prism. This needed component must be of similar size to those delivered last year with a 30 mm x 30 mm aperture. It should also be made of UV Grade Fused Silica. The optical surfaces should again be lambda / 10 at the HeNe wavelength and have a Mil Spec Scratch/Dig of 20/10.

The only significant difference from the fused silica Pellin Broca prism your company supplied last year, is the effective wedge angle of the dispersing prism in the Pellin Broca. Prisms delivered last years have non-standard 45 degrees for their effective wedge angle. We now need a prism with the standard effective wedge angle of the dispersing prism which is 60 degrees for a Pellin Broca. The drawing below of a standard Pellin Broca prism is from Wikipedia.

The prism width into the plane of the drawing must be 30 mm. The distance A-B must be 45 mm to yield a 30.5 mm x 30 mm aperture.

Original inquiry:

I need a large (~40mm) custom CaF2 or MgF2 dispersing prism in a Pellin Broca configuration.

Request a quote

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 -
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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’s 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

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
- DLC (Diamond like coating)

more details - request a quote



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.
- 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.
- 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/µs 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.

Fused silica:
 UV grade Fused Silica window,  6x3 mm, 12.5x3 mm25x3 mm, 50x5 mm
25x3 mm, BBAR 1100-1600 nm25x3 mm, BBAR 400-700 nm
UVFS windows - prisms - lenses - rods

CaF2 optics:
Calcium Fluoride Plano-Convex (PCX) Lenses - CaF2 Plano-Concave Lenses -
IR CaF2 Optics - Excimer Calcium Fluoride Laser Optics & Lenses
50:50 Non-polarizing Cube beamsplitter

Germanium Optics:
Window diam 25.4 - diam 38.1
Etalon - Germanium circular plane parallel etalon, diam 38.1 mm x 4 mm
Germanium etalon Diameter: 0.50 inch Length: 2.00 inch
Germanium Windows and Lenses for Thermography
Germanium windows with 8-12 micron AR coating - 25.4 mm dia x 2 mm thick - 38.1 mm dia x 3 mm thick - 50.8 mm dia x 3 mm thick
Infrared Germanium prism - 25.4x25.4x25.4 mm
Germanium ATR Prism 52 x 20 x 2mm 45°
60 x 15 x 3mm 45° ATR Prism
60 x 15 x 3mm 60° ATR Prism
Thermal camera housing
Germanium windows for a pan tilt thermal imaging product - IR360 FLIR thermal imager

Silicon optics:
Silicon window - diam 25.4x3mm
Silicon hemispherical lens, diam 12 mm, height 7.1 mm

LiF optics:
UV Grade Single Crystal LiF window

MgF2 optics:
VUV grade MgF2 viewport

Sapphire optics:
Sapphire window - Sapphire Ball lens - Sapphire shields & blanks - sheet & flat stock - wafers - safety shields - viewport - components - stock
Dia 1.42*0.25mm - Dia 5.05*0.965mm - Dia 3*2.5mm - 17*17*0.5mm - Dia 17.78*1mm
IR Beamsplitters: ZnSe 70/30 beamsplitter for CO2 laser - 50/50 at 45 degrees

Sapphire windows applications:
Camera & imaging products
High temperature furnace, pyrometer & other
Plasma & chemical etching equipment
Scratch resistant scanner windows
PDA windows
Display windows

ZnSe optics:
cleaning - vacuum viewport - AR coated
AR Coated Zinc Selenide Vacuum Viewport
Broadband AR coating (BBAR 350-700nm, 450-800nm, 650-1050nm, 1050-1620nm) for Vacuum Viewport
IR UHV view ports with Broad Band Anti-reflection (BBAR) coating for IR wavelength range
ZnSe window diam 12.7 mm, thickness 1 mm - diam 20 mm x 3 mm thick - diam 25.4 mm x 3 mm thick

ZnS optics:
Windows - ZnS 0.5 inch dia windows with AR at 4-7 microns

Doubly-doped LiNbO3 crystal
Non-Critical Phase Matching SHG in LiNbO3
LiNbO3 wafers - buy online - more details
Stoichiometric LiNbO3 wafers - 4” Stoichiometric LiNbO3 wafers, YZ-cut - stock
Stoichiometric MgO(0.6%):LiNBO3 crystals
Stoichiometric LiNbO3 doped MgO (~1mol.%)
LiNbO3 retroreflectors
Terahertz crystals LiNbO3
LiNbO3 plates for telecom applications
MgO:LiNbO3 or LiNbO3 crystals for Q-switches
LiNbO3 slide thickness wafers used in single molecule detection for DNA sequencing
Optical beam deflector based on LiNbO3 crystal


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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