Laser Cosmology

Laser cosmology is an emerging field that applies laser technology and related photonics to the study of the universe. It encompasses various aspects of cosmology, including the investigation of cosmic phenomena, the measurement of astronomical distances, and the exploration of fundamental questions about the nature of the universe. Here’s an overview of its principles, applications, and future directions.

Key concepts: 

• Laser Interferometry: This technique uses lasers to measure extremely small distances with high precision. It is foundational in experiments designed to detect gravitational waves and to study cosmic events.
• Cosmic Distance Ladder: Lasers can help improve the accuracy of distance measurements in cosmology, which is crucial for understanding the expansion of the universe and the behavior of galaxies.
• Spectroscopy: Laser-based spectroscopy techniques allow astronomers to analyze the composition, temperature, density, and motion of astronomical objects by examining the light they emit or absorb.