A Real-Life Tricorder! Agilent Raman Resolve Through-Barrier Chemical Analyzer - Page 1
Forum section: electronics / testgear

author: Hugoneus
author_rank: Frequent Contributor
timestamp: July 21, 2023, 12:39:25 am
content: I hope you like this one!You can watch the video here: [50 Minutes]youtu.be/89_HY1oV_J0In this episode Shahriar takes a close look at the Resolve Handheld Raman Analyzer for Chemical Identification from Agilent. This instrument resembles a real-life Tricorder with its ability to identify chemicals through various opaque containers.https://www.agilent.com/en/product/molecular-spectroscopy/raman-spectroscopy/handheld-raman-chemical-detection-systems/resolve-handheld-raman-analyzer-for-through-barrier-chemical-identificationThis video explores every aspect of this instrument's design from principle of operation to the modern electronics required to realize its function. The video is organized as follows:00:00 - Introductions & first through-barrier scan example02:46 - Raman history, invention & Nobel prize04:41 - Infrared absorption, Raman spectroscopy theory, challenges and importance of fluoresce10:49 - Fluorescence example & measurement using Uranium glass & HeCd laser15:21 - Other applications of fluorescence such as microscopy16:48 - Nonlinear optical effect and frequency doubling crystals, measurement of green laser20:13 - Other applications of nonlinear optics, autocorrelation instrument to measure femtosecond pulses23:18 - Electron excitation of atoms to produce photon emissions using Helium & Neon gasses24:23 - Components required to build a Raman spectrometer25:15 - Monochromator & spectrometer architectures, limitations & design29:07 - Agilent Raman Spectrometer overall architecture, Raman chemical fingerprints31:10 - Spatially Offset Raman Spectroscopy (SORS) theory & application32:43 - Agilent Raman Resolve use-cases, accessories and application scenarios36:03 - Measurements & identification of spilled unknown powders & liquids40:53 - Through-barrier plastics & glass measurement of mixed liquids & acids42:52 - Agilent Resolve extensive library & material categories, Reach-back support44:03 - Chemical identification examples using the Vial accessory47:26 - Trace chemical concentration & sensitivity measurement48:34 - Concluding remarks

author: Hugoneus
author_rank: Frequent Contributor
timestamp: July 23, 2023, 05:20:54 pm
content: How did you find the topic of the video? It is a deviation from the usual RF instrumentation - but I believe diversity on the channel is a good thing overall.

author: _Wim_
author_rank: Super Contributor
timestamp: July 26, 2023, 08:02:52 pm
content: Quote from: Hugoneus on July 23, 2023, 05:20:54 pmI really liked it, but I am off course more into optics than RF... (and we use portable raman scanners at work to double check pharmaceutical ingredients before adding them to a bulk).

author: richnormand
author_rank: Unknown
timestamp: July 27, 2023, 01:06:34 am
content: I liked it too.By the time you go in femtosecond optics and high RF there is a lot of concepts in common, including nonlinear processes.For someone in long distance telecommunication (fiber) Raman is familiar too.Please keep doing these. Learning new fields and hardware is also good.Cheers.

author: sebyon
author_rank: Contributor
timestamp: July 27, 2023, 08:29:55 am
content: Hey, super awesome review!You managed to explain a difficult analysis very well. Raman isn't an easy topic to cover. Agilent does some cool stuff but unfortunately out of reach for mere mortals.I've managed to get my hands on probably the worlds smallest commercial Raman spectrometer a few weeks ago (literally slips into my pocket). Might have to look into showing it off sometime.