Borofloat 33 Mirror, MAX R 488nm-514.5nm

$50.16 ~~$83.6~~ In stock

Narrowband Maximum Reflecting Coating (MAX R) Typically used with lasers, Max R coatings provide nearly complete reflection over a specific spectral range, absorbing negligible incident energy. These high-purity coatings are very durable--designed to meet all standard MIL requirements. The trade-offs for high reflectivity (compared to metal reflectors) are: increased polarization sensitivity and increased cost.

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Customer Reviews (4.4 / 5 · 5 reviews)

Elizabeth ★★★★★ Oct 17, 2026

The coating is doing exactly what it should—my 488nm beam is bouncing back with almost zero loss, and the mirror surface stays cool even after a long alignment session. I wasn't expecting such a clean spectral range for this price, but it's held up through dozens of test runs.

Timothy Z. ★★★★★ Oct 12, 2026

Swapped this in for the stock mirror on my 514nm argon setup and the reflection is noticeably tighter, barely any scatter. Runs cool too, which tells me the coating really is absorbing almost nothing. Alignment held up fine after a full evening of beam time.

Hannah U. ★★★★★ Oct 10, 2026

Installed this mirror in my argon laser line and the reflectivity at 488nm is spot on—virtually zero loss. The narrowband coating delivers exactly as specified.