알렉사 플루어 568 필터 세트

Target Fluorophores

While you mentioned mCherry, this set is actually slightly better optimized for Texas Red and Alexa Fluor 594.

• Texas Red / Alexa Fluor 594: Ideally suited. The excitation filter captures the absorption peaks (596 nm and 590 nm, respectively) effectively, and the emission filter (615–655 nm) captures their peak emission perfectly.
• mCherry: Fully compatible, though slightly off-peak. mCherry peaks in excitation at 587 nm and emission at 610 nm.Note: Your emission filter (starts at 615 nm) cuts off the very peak of mCherry emission (610 nm). This is likely an intentional design to reduce background noise or crosstalk (bleed-through) if you are multiplexing with a Far-Red channel (like Cy5).

Recommended Light Sources

• Mercury Arc Lamp (Hg) or Metal Halide: Excellent efficiency (546 nm Peak).
  These lamps possess a powerful emission line at 546 nm, which sits directly inside the excitation filter's bandwidth (540–580 nm). This ensures high-energy excitation for the fluorophores despite the filter cutting off slightly before their absorption peaks.
• LED (Lime-Green / Amber): Precision matching (555–565 nm).
  Modern high-power LEDs centered at 555 nm or 565 nm provide stable, specific excitation light that fills the 560/40 nm filter window efficiently without generating excess heat or UV radiation, minimizing phototoxicity in live samples.
• DPSS Laser (561 nm): Ideal spectral alignment.
  For confocal or laser-based systems, the 561 nm line is the industry standard for this region. It falls squarely in the center of the excitation filter and very close to the absorption maximums of mCherry (587 nm) and Texas Red (596 nm), maximizing fluorescence signal.

Biological Applications - Multi-Color Imaging

The narrow emission bandwidth (40 nm) suggests this set is designed for multiplexing. It allows you to image Red (mCherry) alongside Green (GFP) and Far-Red (Cy5) without signal overlap.

Recommended Light Sources

• Multi-Channel LED Light Engine: Speed and Spectral Purity.
  By using distinct LED chips for each channel (e.g., 470nm for GFP, 550nm for mCherry, 635nm for Cy5), you can switch excitation instantly via electronics rather than mechanical wheels. This allows for high-speed sequential imaging and ensures that when imaging mCherry, the sample is not being blasted with blue or far-red light, reducing phototoxicity.
• Broadband Metal Halide Arc Lamp: Full Spectral Coverage.
  A single high-intensity bulb provides continuous output across the visible spectrum (400–700 nm). This ensures that the specific excitation bands for all three fluorophores (Blue, Green/Yellow, and Red) are powerful and available simultaneously from one unit, making it a versatile "all-in-one" solution for