Title :
Continuous wave frequency doubling of a high energy 1315 nm laser
Author :
Hager, G.D. ; Hanes, S.A. ; Dreger, M.A.
Author_Institution :
Phillips Lab., Kirtland AFB, NM, USA
fDate :
11/1/1992 12:00:00 AM
Abstract :
A series of extracavity frequency doubling tests was performed using the 1315-nm output from RotoCOIL, a chemical oxygen-iodine laser (COIL). LiIO3 was selected for the doubling medium due to its large nonlinear optical coefficient, its low absorption, and the availability of large crystals. Tests were performed for a variety of beam sizes using 1.1-cm and 2.2-cm crystals. Conversion efficiencies of 8% were achieved resulting in visible (657-nm) CW power levels of nearly 700 W. Catastrophic crystal failure occurred after a 1-s exposure to a focused beam of 6770 W
Keywords :
chemical lasers; iodine; lithium compounds; optical harmonic generation; oxygen; 1 s; 1.1 cm; 1315 nm; 2.2 cm; 657 nm; 6770 W; 700 W; 8 percent; COIL; CW frequency doubling; LiIO3; RotoCOIL; beam sizes; catastrophic crystal failure; chemical O2-I laser; conversion efficiency; extracavity frequency doubling tests; focused beam; high energy laser; large crystals; large nonlinear optical coefficient; low absorption; visible CW power levels; Availability; Chemical lasers; Crystals; Electromagnetic wave absorption; Frequency; Laser beams; Nonlinear optics; Optical harmonic generation; Performance evaluation; Testing;
Journal_Title :
Quantum Electronics, IEEE Journal of
