Silicon wafers, substrates and specimen supports

Polished silicon is an excellent substrate for imaging experiments, nanotechnology and micro-fabrication applications. For imaging applications, it is an ideal sample substrate for small particles due to the low background signal of the highly polished surface. For biological applications silicon resembles glass, which makes it a suitable support for growing and/or mounting cells.

The silicon wafers and chips are all P-type, doped with B to provide excellent conductivity for SEM, FIB and STM applications. It is available as wafers, diced wafers or as smaller chips (pieces). The silicon wafer and chips all have a <100> orientation. Cleaving of the wafers to the desired size with a <100> orientation wafers is straight forward and simple.

Micro-Tec silicon wafer substrates from Micro to Nano are a useful flat substrate for SEM imaging of particles due to the low background and can also be used as sample substrates, micro-fabrication, substrate for thin film research or biological substrates. Micro-Tec Si wafers are packed in a wafer carrier tray for protection. The diced wafer supplied on wafer adhesive disc and packed between two plastic sheets for protection. The Si chips can be easily lift off the adhesive sheet.

Wafers and Substrates

SAW crystals and wafers, Film substrates for HTSC (high temperature super conductivity), Magnet and Ferroelectricity and semiconductor applications, crystal wafers and substrate for semiconductors and ceramic substrates are offered in Hangzhou Shalom EO. Besides the customized wafers or substrates for your special applications, a variety model of typical or standard wafers and substrates are available upon your choice in fast delivery and low cost.

A wafer, also called a slice or substrate, is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells. The wafer serves as the substrate for microelectronic devices built in and over the wafer and undergoes many microfabrication process steps such as doping or ion implantation, etching, deposition of various materials, and photolithographic patterning. Finally, the individual microcircuits are separated (dicing) and packaged.

Side-hole type(SC1107)

  • Low background
  • High detection efficiency

The side-hole type NaI(Tl) scintillator is a detector with a side-hole passing vertically through the axis of the cylindrical NaI(Tl) crystal.
It is housed in aluminum cases and, for measurements, light output can be obtained from an optical window mounted on one or both sides of the edges while passing the specimen through the side-hole.

Features

  • High detection efficiency
  • Low background

Application Notes

  1. Environmental Monitoring of nuclear radiation

Nuclear radiation exist universally in our daily life environment, when the radiation intensity higher than security standard, it would be harmful or even lethal to human beings. For its excellent scintillating properties, NaI(Tl) crystals are widely used to make the detectors to monitor nuclear radiation in the industrial and daily life environment, wide field and space.

  1. Nuclear medicine

NaI(Tl) crystals are widely used in the nuclear imaging technology, such as the isotope therapeutic apparatus, Gamma ray cameras ect.. Nuclear imaging is high in sensitivity and accurate in testing results, the method is easy and secure.

  1. Industrial CT and security inspection

The NaI(Tl) are used in the metallurgy industrial to test the speed of metal liquid, to test the thickness of the steel plates, they are also used in the level sensors or switches for solid or liquids. Some security inspection instruments use the NaI(Tl) crystals to test the explosive materials.

  1. Well logging

The NaI(Tl) crystals detect the Gamma ray in the well, by the analysis of the spectrum of the detected scintillating light, the concentration and distribution of the uranium (U), potassium (K) and thorium (Th) in the stratum can be calculated, and the well can be evaluated. NaI(Tl) crystals has high light output and insensitive to temperature change, it has been the first choice for the well logging applications.

scintillators\NaI(Tl) Scintillators\Side-hole type(SC1107)

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Contact information:

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ADD: Room 1031A, Boke Mansion, No.9 Xiyuan Road, Xihu District,

 

Infrared Dome Camera Pictures

The following snapshot pictures were taken using the Infrared Dome Camera in a section of warehouse.

This first picture was taken in our warehouse with the lights on.
IR Dome Day Mode Snapshot

The goal of the second picture was to demonstrate what this camera can do in a zero light condition. We turned all of the lights off in our headquarters warehouse (36 feet deep) and took the following image in zero light, for your consideration.

FROM:CCTV Camera Pros

Cleaning procedure for optics

Optics can be contaminated in many ways. Contamination can be kept to a minimum by returning the optics to their case or by covering the optics for protection from the outside environment. However, even with all these precautions, the optic will eventually accumulate dust, stains or some other form of contamination.
Inspection of Optical Surfaces.
During inspection, all optics must be handled in the cleanest area available (preferably a clean room or within a laminar flow bench). Proper equipment, like powder free clean room gloves or finger cots must be worn at all times to avoid grease and oils from being transferred to the optic. Lens tissue paper, dust free blowers, hemostats, cotton swabs, cotton tips, and reagent
grade acetone and methanol, will all be needed for cleaning optics. The acetone and methanol must be fairly fresh to avoid leaving any marks on the optics. Reagent Grade Isopropyl alcohol can also be used instead of acetone.
There are two ways in which an optic can be evaluated:
i.) If the optic is being used in a laser based system, contamination on the optic might cause the optic to scatter the laser light, thus reducing power and making the optic “glow”.
ii.) An optic can also be visually inspected by holding it below a bright light source and carefully viewing it at different angles. This will cause the light to scatter off the contamination enabling the viewer to see the various stains and dust particles.

Far Infrared Dome Benefits

Far Infrared Dome Benefits:
If you are looking for serious natural healing and wellness in the comfort of your home, look no further. The SOQI Dome’s advanced Japanese technology remains unsurpassed. The Far Infrared heat radiating from the Dome’s inner surface does more than warm and relax the body. Unlike regular heat, Far Infrared heat promotes healing of the body from the inside out.

Far Infrared heat benefits include increased circulation, pain relief, reduction in swelling and inflammation, serious toxin elimination (heavy metals), accelerated healing, and much more.

Far Infrared dry heat means you can remain clothed:
There is minimal to zero sweating so you can leave your clothes on, or wear loose clothing, or just your underwear. Traditional saunas heat up the air around you to a very high temperature creating ‘wet’ heat thereby causing the body to sweat profusely, whereas the Far Infrared sauna dome heat emits a gentle controlled far infrared ‘dry’ heat. Toxins are released into the blood stream and eliminated via urine and feces.

Distance is very Important:
The effects of far infrared ray, which travel in a straight line, weaken with distance, so the closer to the source of the far infrared rays your body is, the more impact they will have. The Far Infrared Dome was designed to be very close to the body for optimal health benefits.

Benefits of an Aspheric Lens

Spherical Aberration Correction
The most notable benefit of aspheric lenses is their ability to correct for spherical aberration, an optical effect which causes incident light rays to focus at different points when forming an image, creating a blur. Spherical aberration is commonly seen in spherical lenses, such as plano-convex or double-convex lens shapes, but aspheric lenses focus light to a small point, creating comparatively no blur and improving image quality. Spherical aberration is inherent in the basic shape of a spherical surface and is independent of alignment or manufacturing errors; in other words, a perfectly designed and manufactured spherical lens will still inherently exhibit spherical aberration. An aspheric lens can be designed to minimize aberration by adjusting the conic constant and aspheric coefficients of the curved surface of the lens.

Optical grade LiTaO3 wafers-Hangzhou Shalom

  • Quasi-phase matching for SHG and OPO
  • Pyroelectric Infrared Detectors
  • Optical fiber communications applications

Hangzhou Shalom EO offers the Optical grade LiTaO3 wafers/crystals/substrates and Optical grade LT wafers/crystals/substrtates, advanced facilities are equipped for crystals growing, wafer cutting, wafer lapping, wafer polishing and wafer checking.

Orientation Z-cut±0.2°
Diameter 76.2mm±0.3mm
Orientation Flat(OF) 22mm±2mm

Perpendicular to X±0.2°

Second Refer Flat(RF) 10mm±3mm

Cw270°±0.5°from OF

Cw315°±0.5°from OF

Thickness 500μm±5μm

1000μm±5μm

Surface Double sides polished

S/D 20/10

TTV ≤10μm
WARP ≤50μm
Curie Temperature 605℃±0.7℃(DTA method)
Edge Beveling Edge rounding

Note, other type of customized LT wafers or substrates are available upon request.

Crystal Optics

Crystal-based X-ray optics are essential and critical optical components of synchrotron light sournces and XFELs. The Crystal Optics section has comprehensive in-house infrastructure, capabilities and expertise for fabricating and developing almost all kinds of crystal-based X-ray optics, including crystal monochromators, analyzers, high-heat-load monchromators, beam splitters, polarizers, mirror substrates, ultrahigh-resolution crystal optics systems, FEL crystal optics, etc., for APS beamlines as well as
Expertise includes:

Designing crystal optics with X-ray dynamical-theory calculations and modeling to achieve desired resolution, efficiency, acceptance, etc.,
Fabricating (and refurbishing) ultrahigh-quality crystal optics (Si, Ge, quartz, sapphire, diamond), from precise orienting, cutting/dicing, grinding, etching, to strain-free polishing
X-ray characterization and testing of crystal optics using X-ray topography and double-crystal rocking curve imaging.

Barium borate (BBO)

Barium borate (BBO) is a versatile nonlinear crystal, suitable for use in harmonic generation operations, optical parametric oscillators, and in electro-optical applications from the near infrared to the deep ultraviolet. Among BBO’s attractive features are it’s large nonlinear coefficients, high threshold for laser damage, and low thermo-optic coefficient.

At here, high quality BBO single crystals are grown using a top seeded solution growth technique. Our in-house growth, fabrication, and finishing provide unparalleled material traceability and process consistency.

Popular applications of BBO include generating the third, fourth, and fifth harmonics of Nd:YAG lasers (355nm, 266nm, and 213nm respectively), the second and third harmonics of Ti:Sapphire amplifiers (400nm and 266.7nm), and a variety of sum frequency mixing schemes using dye lasers. BBO can be used in OPO configurations to generate tunable output in the visible to near infrared range. BBO is also well suited to Q-switching and other electro-optical applications in high power UV laser systems.

BBO crystal has broad tunability, high damage threshold, and high efficiency. BBO’s small acceptance angle requires a very good beam quality and its large walkoff results in output beams that are very elliptical or slit-like. Type I is usually much more efficient than type II operation. BBO can not be used for NCPM (temperature tuned) application.

Typical applications:
  • SHG ,3HG, 4HG and autocorrelation of femtosecond and picosecond Ti:Sapphire lasers;
  • SHG, 3HG, 4HG, 5HG of YAG lasers at 1064 nm and 1320 nm to yield output of 212-660nm;
  • SHG of tunable dye or solid-state laser sources from 410-750 nm to yield output of 205-375 nm;
  • SFM of dye laser and YAG harmonics to yield output of 189-400 nm;
  • DFM (difference-frequency mixing) from the Visible to the IR range up to over 3000 nm;
  • OPO pumped with SHG or 3HG of YAG or Ti:Sapphire with an output range of 400-3000;
  • Intracavity SHG of Argon ion lasers (488, 514 nm) or Copper vapor lasers (510 nm, 578 nm);
  • Used as E-O crystals in pockels cells