Idealphotonics' Helium-Neon (He-Ne) laser is a gas laser that uses a mixture of helium (He) and neon (Ne) as the gain medium, generating continuous wave (CW) laser output through gas discharge excitation.The core value of the He-Ne laser lies in its unmatched coherence, stability, and reliability. Despite its relatively low efficiency and larger size, it remains irreplaceable in the following applications: metrology standards (e.g., wavelength calibration), education and scientific research (such as holography and interferometry experiments), and low-power safety applications (e.g., biological detection).