Filling the Yellow Gap: Testing Unique Laser Colors

🌈I test three lasers claiming to emit yellow light and measure their color and output power.

🔬There is a noticeable gap between green and red lasers known as the yellow gap, making lasers in this range rare and expensive.

💡The first laser in the test emits a yellow-green light at 558 nm, close to our eyes' peak sensitivity.

🟨The second laser emits an amber-yellow light at 593 nm, slightly different from the advertised yellow.

🟩The third laser emits a chartreuse light at around 555 nm, filling the yellow gap and fulfilling a long-awaited dream.

Are the lasers actually yellow?

—The perception of color can be subjective, but the lasers emit colors that are within the yellow range of the visible spectrum.

Why are yellow lasers rare?

—It is technically challenging and expensive to produce lasers that emit light in the yellow range, making them rare outside of research labs.

What are the wavelengths of the lasers?

—The first laser emits light at 558 nm, the second at around 593 nm, and the third at around 555 nm.

How bright are the lasers?

—The first laser has an output power of around 4-5 mW, the second has an unexpectedly high output power of around 20 mW, and the third has an output power of around 28 mW.

Why is the 593 nm laser brighter than the yellow-green laser?

—The higher brightness of the 593 nm laser is unexpected, and the reason for this difference in brightness is unknown.

00:03Introduction to the video and the goal of testing lasers that emit yellow light.

02:30Testing the first laser, which emits a yellow-green light at 558 nm.

06:00Testing the second laser, which emits an amber-yellow light at around 593 nm.

09:59Testing the third laser, which emits a chartreuse light at around 555 nm.

13:53Measuring the output power of the lasers and discussing the unexpected results.

14:36Conclusion and final thoughts on the lasers' colors and output powers.