DNA staining agent with good absorbance at 532 nm

I need to stain some double-stranded DNA with an intercalating fluorescent dye. For imaging, I am using a microscope setup equiped with a 532 nm green laser.  

What is the staining agent of choice to use with a 532 nm excitation source?  

Sytox Orange may [work](https://www.thermofisher.com/order/catalog/product/S11368) but it is a bit pricey.


