A DIY Approach to Spectroscopy

While the concept of DIY spectrometers has been around for some time, the simplicity of creating one using just a phone camera and a fragment from a CD-ROM as a diffraction grating is well-documented. Numerous online tutorials demonstrate how you can assemble one for as little as $5.

Yet, these makeshift spectrometers often grapple with physical limitations, ranging from narrow spectrum bandwidth to challenges in calibration and data reliability. Fortunately, a more refined solution is within reach with minimal modifications to a webcam, the construction of a proper frame, and the use of an accurate diffraction grating. In this article, I will walk you through the design and construction of such a spectrometer, shedding light on its significance in personal research, and discussing the ongoing enhancements incorporated into its second version.

The Spectrometer Design:

Crafted with precision in Fusion 360 and brought to life through a diode laser cutter, the DIY spectrometer was tailored to cater to the specific needs of my research. The primary focus was on exploring the health implications of selective light absorption within the UV-IR spectrum. This device played a crucial role in quantifying visible and near-IR light, contributing valuable data to my ongoing study.

How Spectrometers Work:

Spectrometers operate on the principles of spectroscopy, a technique widely used in various fields, from biomedical applications to astronomy. Traditional spectrometers, like the ones employed in the James Webb Telescope, are designed to analyze the composition of distant celestial bodies by studying the light they emit or absorb. Similarly, my DIY spectrometer allowed me to delve into the intricate details of light absorption within transparent materials.

Relevance to Research:

The DIY spectrometer proved instrumental in my research on UV-IR exposure’s health implications. By exploring the selective absorption of light, I gained a deeper understanding of how different materials interact with specific wavelengths. This knowledge is vital in comprehending the potential effects of UV-IR exposure on human health, contributing to my understanding in photobiology.

Ongoing Improvements:

As with any scientific endeavor, continuous improvement is essential. Currently, I am working on the second version of the spectrometer, which incorporates a smaller inlet slit and an attachment for absorption spectroscopy. These enhancements aim to refine the device’s precision and expand its capabilities, allowing for more nuanced exploration of light absorption in my ongoing research.

This DIY spectrometer project has been a valuable learning experience, both in design and application. As I delve into the intricacies of UV-IR exposure and its effects on human health, the spectrometer stands as a reliable tool in my research arsenal. The ongoing improvements and the journey toward the second version underscore the commitment to advancing scientific exploration in a meticulous and purposeful manner.