Type 1 Frequency Doubling at 1064 nm in LaCa40(B03)3 (LaCOB), GdCa40(B03)3(GdCOB), and YCa40(B03)3(YCOB)

摘要

We have grown and characterized LaCOB, a new member to the GdCOB family of nonlinear crystals. LaCOB has a d(sub eff) of 0.52 plus or minus 0.05 pm/V and an angular sensitivity of 1224 plus or minus 184 (cm-rad)-1 for type I frequency doubling at 1064 nm. The d(sub alpha,beta,beta) and d(sub gamma,beta,beta) coefficients of the nonlinear optical tensor for LaCOB, GdCOB, and YCOB were determined to have values of 0.26 plus or minus 0.04 pm/V and 1.69 plus or minus 0.17 pm/V, respectively. Results of phase-matching angle measurements at 1064 nm and 1047 nm predict LaCOB to be non-critically phase-matched (NCPM) at 1042 plus or minus 1.5 nm. We also estimate the thermal sensitivity of LaCOB to be less than 0.1 (cm-degreesC)-1.