Optics Liquid Nitrogen Cryostat for Spectroscopy & Optical Experiments
The Optics Liquid Nitrogen Cryostat from Xiamen Dexing Magnet Tech. Co., Ltd. is a high-performance cooling system designed for precision optical and photonic experiments. It supports a broad temperature range from 65K to 500K (extendable to 700K) and is widely used in fields like spectral analysis, photoelectric reaction studies, Raman scattering, photoluminescence, and electroluminescence testing.
This optical cryostat is engineered for reliability and efficiency, with a rapid cooling cycle, long-lasting vacuum integrity, and customizable options for sample holders, windows, and electrical connectors. Whether you need stable low-temperature environments or flexible configuration for specialized applications, our cryostat offers a complete solution for modern laboratories.
Optics Liquid Nitrogen Cryostat




Introduction
Optics Liquid Nitrogen Cryostat device is widely used in many fields such as spectrum measurement, photoelectric reaction, Raman research, electroluminescence and photoluminescence. Through precise engineering design, this device realizes the efficient circulation of refrigerant and ensures the stability and reliability of the experimental process.
During operation, the low pressure refrigerant enters the low temperature thermostat through the liquid inlet, and then flows through the internal fine capillary system to the evaporator at the bottom of the thermostat. Advanced heaters and temperature sensors are installed on the evaporator to ensure that the temperature of the steam is precisely controlled and is adjusted by the thermostat before being sprayed into the sample chamber. The steam released during the cooling process of the sample is discharged into the atmosphere through a special air outlet pipe, or into the gas recovery device to realize the recycling of resources.
In order to facilitate the user's operation, we specially designed the structure of the top loading sample, making the sample replacement easy and fast. At the same time, the low temperature thermostat adopts a compact vacuum cover design at the bottom, which not only reduces the duty cycle, but also makes it more suitable for measurement work in magnetic fields.
The Optics Liquid Nitrogen Cryostat device has many advantages:
◆ Its wide temperature range, covering 65K to 500K, and can be extended to 700K, high cooling efficiency, fast speed, for the experiment to provide an efficient cooling environment.
◆The sample is placed in the vacuum chamber to ensure the stability and purity of the experimental environment.
◆ The vacuum interlayer is equipped with low-temperature adsorbent, which effectively extends the vacuum holding time and the use time of liquid nitrogen.
◆ The temperature sensor adopts high quality PT100 platinum resistance to ensure the stability and repeatability of measurement.
◆ Multiple configuration options to meet different test requirements.
◆ The user can easily add liquid nitrogen during use to ensure the continuity of the experiment. ◆ The optical sample holder is exquisitely designed, equipped with pluggable sample card and convenient binding pile, which brings great convenience for experimental operation.
◆ It can be customized according to the specific needs of customers to meet the personalized experimental requirements.
◆ The standard 8 measurement leads can be extended to 32, providing ample connection options for experiments. In terms of Windows, the standard is equipped with 2 fused quartz Windows, which can be expanded to 5 according to needs, and the window material can also be replaced according to the user's requirements, providing a flexible choice for the experiment.
◆ The sample replacement process is fast and convenient, only 5 minutes to complete, greatly improving the efficiency of the experiment.
◆ Provide a variety of sample rack, including liquid sample rack, dust sample rack, solid sample rack and block sample rack, to meet the test needs of different types of samples.
Technical specifications
|
Model |
DXT9115-4W |
DXT9115-4W-H |
DXT9120-4W |
DXT9120-4W-H |
DXT9130-4W |
DXT9130-4W-H |
|
Temperature range |
65-325k |
65-500k |
65-325k |
65-500k |
65-325k |
65-500k |
|
Cooling time |
≤25min |
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Optical window |
Four Φ15X1.5 |
Four Φ20X1.5 |
Four Φ30X1.5 |
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Test lead connector |
Standard 8-core measurement lead connector, optional coaxial connector and microwave connector. |
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Sample holder size |
15X25mm |
15X25mm |
20X30mm |
20X30mm |
30X40mm |
30X40mm |
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Thermometer |
PT100 platinum resistance thermometer (both calibrated and uncalibrated, the default is uncalibrated) |
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Temperature stability |
±0.01K depends on the DXTC-290 temperature controller |
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Heater |
30W |
60W |
30W |
60W |
30W |
60W |
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Vacuum interface |
Standard KF25 interface |
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Sample environment |
The sample is placed in a vacuum environment |
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Vacuum degree |
≤1Pa is enough |
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Liquid nitrogen maintenance time |
6h@80K; 5h@100K; 3h@200K |
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Liquid nitrogen chamber volume |
Standard 500ml (can be customized) |
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Application scope |
Spectral testing, photoelectric reaction, Raman, electroluminescence, photoluminescence, etc. |
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Sample holder options:
|
Model |
Specifications and Parameters |
Material |
|
Describe |
|
DXT9115-4W |
15X25mm |
OFHC |
Standard optical sample holder, |
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DXT9115-4W-10LTH |
15X25mm |
OFHC |
Standard optical sample holder with Φ10mm hole in the middle |
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DXT9115-4W-H-10LTH |
15X25mm |
OFHC |
Standard optical sample holder with Φ10mm hole in the middle |
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DXT9120-4W |
20X30mm |
OFHC |
Standard optical sample holder, no hole in the middle |
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DXT9120-4W-15LTH |
20X30mm |
OFHC |
Standard optical sample holder with Φ15mm hole in the middle |
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DXT9120-4W-H-15LTH |
20X30mm |
OFHC |
Standard optical sample holder with Φ15mm hole in the middle |
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DXT9130-4W |
30X40mm |
OFHC |
Standard optical sample holder, no hole in the middle |
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DXT9130-4W-20LTH |
30X40mm |
OFHC |
Standard optical sample holder with Φ20mm hole in the middle |
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DXT9130-4W-H-20LTH |
30X40mm |
OFHC |
Standard optical sample holder with Φ20mm hole in the middle |
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DXPSC-10 |
Φ10 |
Quartz |
Powder sample container with 10mm quartz window on one side |
Note: 1: All standard optical cryostats are shipped with only one sample holder. 2: If the above standard sample frame can not meet customer needs, it can be customized according to customer requirements. 3: In order to fix the optical performance sample, all optical cryostats are equipped with pressure plates to fix the sample. The aperture of the pressure plate is consistent with the size of the light hole.
Cryostat Optical connector options:
|
Electrical connector model |
Specifications and Parameters |
Describe |
|
DXT91-8P ordinary glass sintering |
8pin |
Add a quick-plug 8P ordinary electrical connector |
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DXT91-12P ordinary glass sintering |
12pin |
Add a quick-plug 12P ordinary electrical connector |
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DXT91-SMA |
0-18GHz |
With soft cable |
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0-12.4GHz |
Equipped with semi-rigid and semi-flexible cables |
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DXT91-BNC |
0-4GHz |
With ordinary coaxial cable |
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DXT91-TRX |
triax connector |
Add a quick-plug triaxial connector |
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DXT91-S |
Stainless steel junction box |
Add a stainless steel junction box |
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DXT91-PTEF |
PTFE wiring cover |
Add a PTFE plate wiring cover to the stainless steel junction box |
Note:
1: When all cryostats come out of the factory, they come with two connectors. One is for the installation of temperature sensors and heaters, and the other is a connector for other performance measurements. When more test lines are needed, it is necessary to add mounting holes or install one or more distribution boxes;
2: There are DXT91-S options in the table above. The wiring board and housing of this option are grounded as a whole. The other is the DXT91-PTEF option. This option uses teflon board insulation in the housing and mounted connectors. The electrical properties of the housing and connector are independent of each other. Pay attention to this problem when choosing.
3: Decompression attachment option. The standard cryostat itself does not come with special decompression spare parts. If the low temperature is 65K, you need to configure the corresponding decompression accessories.












