or if you want good long rang IR for not much money then your not beat this IR for price
https://www.alibaba.com/product-detail/UniqueFire-UF-2001-VCSEL-850nm-ir_1600087672273.html?spm=a2700.icbuShop.41413.11.2ae971d8u9hLgw
https://www.alibaba.com/product-detail/UniqueFire-UF-2002-VCSEL-diode-laser_1600088217527.html?spm=a2700.icbuShop.41413.9.2ae971d8u9hLgw
found this video on the 850 VCSEL IR