New old stock Sealed with desiccant Castech BBO crystal for SHG of various wavelengths.

This sale is for the 1150nm-1600nm to 575-800nm version. Part # 712-4453

See my other sales for the other 3 versions.

Last photo is of one I removed to show the flat side with directional arrow. 

 I have the following available     550-800nm to 275-400nm

                                                  800-1150nm to 400-580nm

                                                 1150-1600nm to 575-800nm

                                                1600-2300nm to 800-1150nm  

Collect all four and cover a lot of wavelengths. Compare to Thorlabs versions below.

                                                 680-  900nm to 340-450nm

                                                 900-1300nm to 450-650nm

                                               1300-1700nm to 650- 850nm

                                                  

I combine ship as well.