To measure the wavelength of the light of a LED using LDR: a simple and an inexpensive method

Lahane, Rohan D.; Bhatt, Harsh R; Paranjpye, A.

doi:10.1088/1361-6552/ac5b7f

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2022

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…About the LEDs spectra measurement, it is usually accomplished with a spectrometer [3,7]. Recently, Lahane et al presented an electrical method to measure the wavelength of the light of an LED using a light depending resistor [8]. In this paper, we propose an optical method based on interferometer, which is simple, convenient, and accurate.…”

Section: Introductionmentioning

confidence: 99%

Measuring the central wavelength and bandwidth of an LED with the Michelson interferometer

Zeng¹,

Zeng²

2022

Phys. Educ.

View full text Add to dashboard Cite

A method for measuring the central wavelength and bandwidth of a light emitting diode (LED) using the Michelson interferometer is proposed. It is easy to see the interference fringes on the screen by setting the optical path properly. Based on it, the central wavelength and bandwidth of LEDs with three different colours are measured, and the experimental results are consistent with the results from a spectrometer. The experiment will be helpful for students to understand the spectral and coherence characteristics of LEDs. It can also be an extended content of Michelson interferometer.

show abstract

Section: Introductionmentioning

confidence: 99%