Inquiry about Green Laser Module NEW

I am looking for a visible green laser module to serve as a guidance beam integrated into an existing high-power invisible infrared laser system. The green laser will be placed inside the main box of the infrared unit, aligned to share the exact same physical output path. This will allow the operator to visually confirm the strike point of the invisible Class 4 infrared beam. Requirements: - Beam divergence: less than 0.1 mrad, effective up to 400 m distance. - Visibility: the green beam must remain clearly visible within 400 m under hot tropical conditions up to 36°C. - Footprint: the device should be at least 40 cm in length. Please suggest suitable products. Thank you.