超导纳米线单光子探测器（SNSPD 或 SSPD）是可见光和近红外频率范围内性能最高的探测器之一。在 Photon Spot， Photon Spot努力不断改进探测器规格。 Photon Spot的典型规格是：

• >85% 系统检测效率

• 低于 100Hz 的暗计数

• ~70 ps FWHM 时序抖动；还为 NbN 探测器提供了 30-40ps 的增强规格。

• ~50 ns 的恢复时间

 Photon Spot已经在许多波长（包括 1550 nm、1310 nm、940nm、825nm 和 780nm）上演示了这些规格，并且还构建了许多宽带探测器。

 Photon Spot最近制造了效率为 95.5% @ 1550nm、100kcps 的探测器，经 NIST 验证。如果您有兴趣收到测试报告的副本，请与我们联系。

产品咨询：185 0219 3480

 Photon Spot还生产定制的探测器，可以提供：

• 从紫外到近红外的用户指定波长下的高效率

• 超低暗计数 (<10cps)

• 光子数分辨率

• 大面积耦合到多模光纤

• 更快的重置时间，例如~10-15ns

• 中红外灵敏度

已经制造了紫外和中红外之间超过 15 个波长的检测器，以及波长跨越数百纳米的宽带检测器。将您的规格通过电子邮件发送给我们——我们可能有现货！

产品咨询：185 0219 3480

我们拥有多项探测器相关专利技术的独家许可，包括多元素纳米线探测器。

航天应用案例：

Cryospot 3

2013年9月6日，美国宇航局发射了月球大气和尘埃环境探测器。 作为月球激光通信演示的一部分，该航天器旨在使用机载激光器以高达每秒 622 兆比特的速度向地面接收终端传输数据。

2013 年 10 月 18 日，LLCD “创造了历史，以每秒 622 兆位 (Mbps) 的速率将数据从月球轨道传输到地球。该下载速率是以前最先进技术的六倍多 发射到月球的无线电系统......证明了与多个地点通信的能力，LLCD 成功地将其光束多次传输到美国宇航局位于加利福尼亚州的喷气推进实验室的光通信望远镜实验室。” （美国宇航局新闻稿）

Photon Spot 的 Cryospot™ 3 是这一激动人心的演示和协作努力的一部分。

我们的探测器非常适合低光子通量应用，例如：

• 自由空间光通信

• 低通量生物光子学

• 量子光学实验

• 线性光学量子计算

• 半导体诊断

立即联系我们并提供您所需的规格。

Cryospot™ 低温系统

Photon Spot 提供了许多低温系统，可以根据您的实验目的进一步定制。 我们的低温系统：

无需先前的低温操作经验，是封闭循环的，这意味着它们在运行时不消耗液态制冷剂，可以配置我们的吸附式冰箱之一，以实现 < 0.8K 的操作，并且具有非常紧凑的外形，但提供足以进行大多数低温实验的样品空间。

我们的低温恒温器非常适合超导探测器，例如超导纳米线单光子探测器，以及包括谐振器和射频/微波混合器在内的低温电子设备。 它们的快速冷却时间也使它们非常适合“快速”组件测试和临界电流/温度测量。

Photon Spot offers a number of cryogenic systems that can be further tailored for your experimental purposes.  Our cryogenic systems:

• require no prior cryogenic experience to operate,

• are closed-cycle, meaning they do not consume liquid cryogens for operation,

• can be configured with one of our sorption fridges to enable < 0.8K operation, and

• have a very compact form-factor, yet provide a sample space that is sufficient for most low-temperature experiments.

Our cryostats are perfectly suited for superconducting detectors, such as superconducting nanowire single-photon detectors, and cryogenic electronics including resonators and RF/microwave mixers.  Their fast cooldown times also make them perfect for "rapid" component testing, and critical current/temperature measurements.

Cryospot 5 The Cryospot 5 is our newest cryogenic system with the largest sample volume. The Cryospot 5 is designed to accept either GM or PT cold heads, can take 2 sorption fridges, and offers free-space optical access. The Cryospot 5 can support up to 64 detector channels. Read More
Cryospot 4FS The Cryospot 4FS adds free-space optical access to our popular Cryospot 4 cryogenic system. The Cryospot 4FS can also be configured with a pulse-tube cooler for lower vibrations. Read More
Cryospot 4 The Cryospot 4 is our most versatile cryogenic system. The Cryospot 4 is designed to accept GM cryocoolers of a variety of sizes (up to 1W @ 4.2K), and is ideal when vibrations are not an issue. The Cryospot 4 can support up to 16 detector channels, and can be extended to support 32 channels. Read More
Cryospot 4M The Cryospot 4M is our entry-level cryogenic system and is also the most compact. Due to its size, the Cryospot 4M can only be configured with a 0.1W/0.2W GM cryocooler. The Cryospot 4M can support up to 4 detector channels, and can be extended to support 16 channels. Read More
Cryospot 4LV The Cryospot 4LV is our low-vibration cryogenic system and comes equipped with either a 0.25W or 0.5W pulse-tube cooler. Read More
Cryospot 3 (discontinued; by special order only) The Cryospot™ 3 is our cryogenic system with the largest sample space. The Cryospot 3 is designed to fit GM or pulse-tube cryocoolers, air- or water-cooled compressors, and a rack of supporting electronics in its frame. Read More
Feature Comparison Matrix Compare the Cryospot systems and find out the best system for your application. Read More

0.8K Sorption Fridges

Each Cryospot system can be ordered with a 0.8K Helium sorption fridge. Our sorption fridges typically hit a base temperature between 0.7K -0.8K. Our patent-pending technology behind the sorption fridge enables fast cooldowns, rapid cycle times, and a stable temperature.

Freeze4™ 0.8K "Single-Shot" Sorption Fridge The Freeze4 helium sorption fridge enables operation at 0.8K and below at the touch of a button for a hold-time of 12 hours, 24 hours or 36+ hours, depending on the model. Read More
Freeze4-XT Continuous Sorption Fridge The Freeze4-XT enables continuous operation at sub-Kelvin temperatures. Read More

Software & Options

FreezeControl Software The FreezeControl™ software application allows automated operation of our Cryospot systems. Each of our systems comes standard this software, with free updates as new features are added. Read More

Vacuum & Remote Control Package This option is recommended for users who wish to operate the cryostat from a remote location, or for users with limited or no prior cryogenics experience. We provide an oil-free roughing/turbo vacuum pumping system, vacuum gauge, and control electronics for remote on/off of the helium compressor, vacuum pump, and vacuum valve. All components are monitored and controlled via the FreezeControl software.