Virtually every scientific field has made strides by harnessing light to study the properties of substances. This technique, called spectroscopy, has countless research applications, and innovations ...

Figure 1. Schematic diagrams of CF-LITES and CF-H-LITES detection system. (a) The detailed diagram of the QTF. (b) The figure of the self-designed T-shaped QTF. Σ: adder; TA: trans-impedance amplifier ...

A new method for broadband THz–fingerprint Raman spectroscopy at an ultrafast spectral rate enables synchronous measurement of two distinct types of vibrational signals, for dual-region sensitivity ...

Accurately measuring the amplitude of a sinusoidal signal is a design challenge that is common to many data acquisition designs. The most famous and ubiquitous solution to this problem is synchronous ...

Synchronous detection is a measurement method where a stimulus is modulated with some frequency and the response is demodulated to bring the signal back down to base band. Performed when a dc stimulus ...

You can’t clean up what you can’t detect. Whether it’s dealing with the aftermath of a chemical spill, checking food for adulteration, identifying an improvised explosive device (IED) or sanitizing a ...