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We demonstrate three-dimensional (3-D) quenched narrow-line laser cooling andtrapping of 40Ca. With 5 ms of cooling time we can transfer 28 % of the atomsfrom a magneto-optic trap based on the strong 423 nm cooling line to a trapbased on the narrow 657 nm clock transition (that is quenched by anintercombination line at 552 nm), thereby reducing the atoms' temperature from2 millikelvin to 10 microkelvin. This reduction in temperature should helpreduce the overall systematic frequency uncertainty for our Ca opticalfrequency standard to < 1 Hz. Additional pulsed, quenched narrow-linethird-stage cooling in 1-D yields sub-recoil temperatures as low as 300 nK, andmakes possible the observation of high-contrast two-pulse Ramsey spectroscopiclineshapes.Comment: 21 Pages including figures. Submitted to JOSA

Quenched narrow-line second- and third-stage laser cooling of ^40 Ca