California Code, Government Code - GOV § 31685.4

(a) The nonmember shall have the right to purchase service credit pursuant to the determination of the court required by Section 31685.

(b) The nonmember may purchase only that service credit that the court has determined to be the community property share of the nonmember spouse.

(c) If the nonmember elects to purchase service credit, he or she shall pay, prior to retirement, the contributions and interest pursuant to the regulations of the board.

(d) The nonmember shall have no right to purchase the service credit after the effective date of a refund of the accumulated contributions in the separate account of the nonmember.

(e) The member has no right to the court-determined nonmember share of the service credit whether or not the nonmember elects to purchase the service credit until the effective date of any refund requested by the nonmember pursuant to Section 31685.2, or the nonmember dies before the service credit is purchased.  However, any service credit eligible for purchase that is not explicitly awarded to the nonmember by the judgment or court order shall be deemed the exclusive property of the member.