FTIR(傅里叶变换红外光谱仪)是一种红外光谱仪测量方法。
首先,用红外光照射样品(固体、液体或气体),然后使用干涉仪干涉透射光或反射光,并通过傅里叶变换信号强度来获取光谱信息。然后根据光谱信息对物质的定性、定量和鉴定特点进行分析。
此方法以 FTIR 分析仪或傅里叶变换红外分光光度计的形式用于各种领域,包括化学分析、医疗、环境分析和材料分析。
滨松提供适合用于 FT-NIR 和 FT-IR 的光谱模块和红外探测器。
FTIR 引擎是一个傅里叶变换光谱模块,将光干涉仪和控制电路集成在紧凑的外壳中。它在波长 1.1 至 2.5 μm 的近红外区域具有高灵敏度。它适合用手掌握住,而且可以集成到 FTIR 分析仪中。这有助于实现固定式 FTIR 分析仪的小型化和便携性,而这正是保持至今的主流趋势。
为了消除由小型化引起的入射光量的降低,我们使用滨松的原创 MEMS 技术开发了一种可动反射镜。该反射镜在光干涉仪内构成执行器,然后借此进行改进,以便高效利用反射光。此外,我们将可动反射镜和固定反射镜集成为 MEMS 芯片,从而使其结构紧凑,并将反射镜之间的相对角度误差减小至约 1/100。通过优化 MEMS 执行器的结构和驱动方法,消除运行期间的模糊问题,我们抑制了光干涉仪内部的红外光扩散,并减少了损耗。如此一来,我们实现了堪比传统固定式设备的检测性能。
当被测量的光(入射光)被分束器分割,被可动反射镜和固定反射镜反射,然后再次结合时,就会发生光干涉。根据可动反射镜的位置变化的干涉光强度由光电检测器(InGaAs PIN 光电二极管)检测,然后对信号进行算术处理(傅里叶变换)以获得光谱。通过使用光电检测器(硅 PIN 光电二极管)和半导体激光器 (VCSEL) 测量干涉仪内部可动反射镜的位置,可以获得具有高波长再现性的光谱。
比较来自 FTIR 引擎和来自固定光谱仪的糖粉样品(葡萄糖、蔗糖)的反射测量结果,我们发现甚至可以使用 FTIR 引擎准确测量微小的峰型,和使用固定光谱仪获得的光谱相似。
在波长 1.1 至 2.5 μm 的近红外区域,有羟基在水中(1.45 μm 波段、1.9 μm 波段)吸光和烷基在酒精饮料中(2.1 至 2.5 μm)吸光。通过透射测量结果,我们能够获得水和酒精饮料吸收波段的特性谱。此外,根据 2.3 μm 波段吸光度估算的酒精浓度结果,我们确认了饮料中所含成分的估算值和数值相匹配,并且可以进行高精度测量。
我们预期在各种难以及时进行测量的情形中为 FTIR 引擎找到众多用途,其中包括农产品收获前检查、土壤分析和塑料筛分。
这是一种用于 FTIR 的红外探测器,采用滨松原创晶体生长技术和工艺技术,在不超过 14 μm 的波段具有灵敏度。它不含 RoHS 管制物质汞或镉,因此可用作 MCT 光伏元件的替代产品。
因此,我们实现了 14.5 μm 的截止波长,比传统 MCT 光伏元件更长。它还具有出色的线性度,可实现宽动态范围,预计这将有助于提高 FTIR 分析仪的精度。
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