光电倍增管(PMT)是一种设计用于在单个光子水平下检测和放大极低光量的高灵敏度真空器件。
该器件通过光电效应将入射光子转换为电子,再以一系列倍增器电极倍增这些电子,从而产生可测量电信号来运行。
PMT 因超高灵敏度、快速响应及低噪声而备受推崇。其广泛应用于各种用途,如医疗成像、核物理与粒子物理、光谱学以及工业检查等,在这些领域中,对精准可靠的微弱光信号检测至关重要。
滨松从复杂成型到电极装配的精密玻璃制造工艺,是确保光电倍增管性能可靠性的基础。我们凭借内部制造的专业知识与精湛工艺,为广泛应用于科学和工业检测用途领域的 PMT 及相关组件提供技术支持。
滨松基于数十年的真空管技术积淀,通过完全集成的专有制程,研发并制造 PMT。这些制程涵盖玻璃处理、电极装配、密封、抽真空以及严格检查,共同确保了产品的高性能与长期可靠性。
我们的能力可生产出形状、尺寸和光谱灵敏度各异的多种 PMT。结合内部的专业知识与精湛工艺,我们既支持多品种、小批量的生产,又能根据客户的多样化需求,灵活开展产品开发工作。
光电倍增管利用外光电效应将光转换为电信号。从光阴极面发射出的电子在聚焦电极的引导下,经倍增器电极倍增,终在阳极收集为电信号。
该制程需要在精准控制的真空环境中进行。真空环境的稳定性与质量直接影响电子运动、信号放大以及器件的整体性能。
真空技术在光电倍增管制造过程中同样至关重要。真空技术在光阴极面沉积和二次发射面形成等制程中发挥关键作用,直接影响产品的灵敏度、稳定性和可靠性。
这些动画展示了光电倍增管内部从光进入光电倍增管器件至放大电信号产生的电子倍增制程。其清晰直观地展示了微弱光信号是如何被转换为可测量输出信号的。
PMT 包含三个主要组件:受光窗、光阴极面和电子倍增器(倍增器电极)。入射光首先穿过受光窗,并在光阴极面被转换为电子。然后这些电子经倍增器电极倍增,终提取为电信号。
受光窗让入射光进入 PMT。
受光窗材料的选择决定了可透射波长范围(特别是在较短波长下),因此会影响该器件的可用光谱范围和灵敏度。
光阴极面是在受光窗内表面沉积的一层薄感光层。其将入射光子转化为电子。光阴极面的材料组成对 PMT 的光谱灵敏度特性和灵敏度有着显著影响,是决定器件整体性能的关键因素。
电子倍增器由一系列称为倍增器电极的电极组成。从光阴极面发射的电子通过倍增器电极上的二次电子发射实现倍增,将微弱信号放大至可探测位准。倍增器电极结构会影响增益率、时序特性以及整体性能。
滨松光子学株式会社不仅致力于提升光电倍增管的灵敏度,还优化包括时间分辨率、稳定性和耐用性等在内的各种性能特性,不断推动光电倍增管技术的进步。
通过在材料、设计和制造工艺方面的持续创新,我们力求实现更精准、更可靠的光探测,满足科学、医疗和工业应用领域不断发展的需求。
学术研究用 20 英寸 PMT 示例:
|
|
|
|
| 设施名称 | Kamiokande (从 1983 年到 1996 年) |
SuperKamiokande (从 1996 年至今) |
HyperKamiokande (规划阶段) |
|---|---|---|---|
| 类型编号 | R1449 | R3600 | R12860 |
| 电子渡越时间分散度 | 8.0 ns | 5.5 ns | 2.4 ns |
It looks like you're in the . If this is not your location, please select the correct region or country below.
You're headed to Hamamatsu Photonics website for (Chinese). If you want to view an other country's site, the optimized information will be provided by selecting options below.
In order to use this website comfortably, we use cookies. For cookie details please see our cookie policy.
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in this cookie policy. By closing the cookie warning banner, scrolling the page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.
Hamamatsu uses cookies in order to enhance your experience on our website and ensure that our website functions.
You can visit this page at any time to learn more about cookies, get the most up to date information on how we use cookies and manage your cookie settings. We will not use cookies for any purpose other than the ones stated, but please note that we reserve the right to update our cookies.
For modern websites to work according to visitor’s expectations, they need to collect certain basic information about visitors. To do this, a site will create small text files which are placed on visitor’s devices (computer or mobile) - these files are known as cookies when you access a website. Cookies are used in order to make websites function and work efficiently. Cookies are uniquely assigned to each visitor and can only be read by a web server in the domain that issued the cookie to the visitor. Cookies cannot be used to run programs or deliver viruses to a visitor’s device.
Cookies do various jobs which make the visitor’s experience of the internet much smoother and more interactive. For instance, cookies are used to remember the visitor’s preferences on sites they visit often, to remember language preference and to help navigate between pages more efficiently. Much, though not all, of the data collected is anonymous, though some of it is designed to detect browsing patterns and approximate geographical location to improve the visitor experience.
Certain type of cookies may require the data subject’s consent before storing them on the computer.
This website uses two types of cookies:
This website uses cookies for following purposes:
Cookies help us help you. Through the use of cookies, we learn what is important to our visitors and we develop and enhance website content and functionality to support your experience. Much of our website can be accessed if cookies are disabled, however certain website functions may not work. And, we believe your current and future visits will be enhanced if cookies are enabled.
There are two ways to manage cookie preferences.
If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit www.aboutcookies.org, which contains comprehensive information on how to do this on a wide variety of desktop browsers.
Occasionally, we may use internet tags (also known as action tags, single-pixel GIFs, clear GIFs, invisible GIFs and 1-by-1 GIFs) at this site and may deploy these tags/cookies through a third-party advertising partner or a web analytical service partner which may be located and store the respective information (including your IP-address) in a foreign country. These tags/cookies are placed on both online advertisements that bring users to this site and on different pages of this site. We use this technology to measure the visitors' responses to our sites and the effectiveness of our advertising campaigns (including how many times a page is opened and which information is consulted) as well as to evaluate your use of this website. The third-party partner or the web analytical service partner may be able to collect data about visitors to our and other sites because of these internet tags/cookies, may compose reports regarding the website’s activity for us and may provide further services which are related to the use of the website and the internet. They may provide such information to other parties if there is a legal requirement that they do so, or if they hire the other parties to process information on their behalf.
If you would like more information about web tags and cookies associated with on-line advertising or to opt-out of third-party collection of this information, please visit the Network Advertising Initiative website http://www.networkadvertising.org.
We use third-party cookies (such as Google Analytics) to track visitors on our website, to get reports about how visitors use the website and to inform, optimize and serve ads based on someone's past visits to our website.
You may opt-out of Google Analytics cookies by the websites provided by Google:
https://tools.google.com/dlpage/gaoptout?hl=en
As provided in this Privacy Policy (Article 5), you can learn more about opt-out cookies by the website provided by Network Advertising Initiative:
http://www.networkadvertising.org
We inform you that in such case you will not be able to wholly use all functions of our website.
Close