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What is the wavelength of yellow laser?

Published in Optics 2 mins read

The wavelength of yellow laser light typically falls within the range of 561 nm to 586 nm. However, a "pure yellow" laser often refers to a specific wavelength of 577 nm.

Here's a breakdown:

  • Range of Yellow Light: Yellow light encompasses a spectrum of wavelengths, generally considered to be between 561 nm (yellow-green) and 586 nm (yellow-orange).

  • 577 nm - "Pure Yellow": A specific wavelength of 577 nm is often referred to as "pure yellow." This particular wavelength is significant because it corresponds to the maximum peak for oxyhemoglobin absorption.

  • Applications of 577 nm Lasers: Lasers emitting at 577 nm have specific applications, particularly in medical fields. They are sometimes preferred over other yellow wavelengths (like 561 nm or 586 nm) or even green wavelengths (like 532 nm) for certain procedures, such as those related to retinal treatments. The reference document "Why Consider the Yellow 577 nm Wavelength?" highlights some advantages of using the 577 nm wavelength.

In summary, while the wavelength of yellow laser can range from 561nm to 586nm, many applications utilize 577nm as the "pure yellow" wavelength.

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