Iodine-stabilized 543 nm HeNe lasers

[[abstract]]Internal-mirror 543 nm HeNe lasers are frequency-stabilized on the iodine hyperfine transitions. The Allen standard deviation of 1×10−12 is reached after a 10 second integration time. The hyperfine spectrum originating from the R (12) 26-0 and R (106) 28-0 lines of the B-X system of 127I2 has been studied. The frequency differences between hyperfine components have been measured by beat frequency techniques, and the hyperfine coupling constants are fitted for the R (106) 28-0 line.[[fileno]]2010123010058[[department]]物理