Our high temperature interfaces use a unique combination of mechanical and thermodynamic properties to create a high temperature thermal disconnect between the cold head and the sample space. This allows for heating of the sample space far in excess of the maximum 355K temperature of our cryocoolers.

450K The easy way

Our 450K interface is a simple semi-perminant addition to the cold tip that expands the upper sample temperature range by 95K utilizing most of the same instrumentation as our standard cryocoolers.

800 K Pouring on the Heat

Our specially design 800K interface goes beyond the standard techniques to provide a unique system that maximizes thermal conduction at low temperatures while minimizing heat transfer at high temperatures. Beyond the safe operating temperature of Silicon Diodes the standard sensors are replaced with E-type Thermocouples and Platinum RTDs.

From our standard offerings of single strand copper and low noise coaxial wiring packages, to any number of custom wiring configurations, our technicians painstakingly wrap each cold head for optimum thermal anchoring.

Typical instrumentation for temperature measurement and control include, one 36 ohm thermofoil heater, one curve matched silicon diode for rough temperature control, and one free length calibrated diode for direct attachment to the sample or sample holder for accurate temperature measurement. Silicon diode sensors are favored heavily for most standard applications, because of their low cost, durability, and stability, but we do offer a wide variety of other sensors for different applications such as Cernox sensors for high magnetic fields, E-type thermocouples for 4 K - 800 K measurements, and Platinum RTD's for accurate high temperature measurements.

Our wide selection of wiring and instrumentation is matched by an equally wide selection of temperature controllers from Cryocon, Lakeshore, and Scientific Instruments.

Window Materials for all Transmission Ranges

High purity quartz is the standard window material for most of our optical cryostats, but we have a wide variety of other window materials available, from near IR materials like CaF₂ and KBr, to far IR and terrahertz like Ultra High Molecular Wright Polyethylene and Picarin, to Kapton, Mylar and Beryllium for X-ray experiments. If you don't see the window material you're looking for please contact one of our sales representatives.

Optimized for Weak Signal Collection with Minimum Heat Load

The tiered optical access of the 1.25" clear view vacuum shroud window and radiation shield optical ports allows for a large cone of optical access (F/# = 1) and at the same time limited the area of exposure to 300K thermal radiation.

Low Stress Window Mounts

Our window ports are designed to gently cradle the window material creating a low stress seal that limits optical distortions

Whether the measurement is optical or electrical in nature, the sample large or small, we have a sample holder for almost any measurement. The LT4-DMX-1AL can accept all but our largest sample holders. As will all of our cold fingers the LT4 has a 1/4-28 threaded hole on the cold tip to mount the sample holder. So even if you do not find what you need from our wide variety of sample holders there is always the option of attaching a custom sample holder.