Interferometry and Holography With Diode Laser Light

TL;DR

This paper demonstrates that low-cost diode lasers can be effectively used for interferometry and holography, producing results comparable to traditional helium-neon laser setups.

Contribution

It introduces a simple, inexpensive diode laser-based system for interferometry and holography, showing its feasibility and similar performance to more costly laser sources.

Findings

Successful creation of interference fringes with diode lasers

Holograms of small objects comparable to helium-neon laser results

Low-cost diode laser setup is effective for interferometric and holographic applications

Abstract

We made an interferometric Michelson type setup and a simple holographic setup to demonstrate the feasibility of interferometric and holographic techniques by means of a diode laser. The laser was made by using a common diode available as a penlight element (less than R$ 15,00 value) and a simple stabilized 110 VCA- 3 VCC power supply. Interference fringes and holograms of small objects where obtained very similar to those of a helium-neon laser based setup.