title: Single-frequency 1.25 W monolithic lasers at 1123 nm.
abstract: Experimental investigation ofd Nd:YAG monolithic nonplanar ring lasers operated at 1123 nm wavelength is presented. Stable single-frequency 1123 nm laser output has been obtained with successful suppression of the strong 1064 nm radiation. Single-frequency output power of 1.25 W is demonstrated with a pump power of 3.98 W at 808 nm, which gives a slope efficiency of 39%. The laser frequency tuning range is over 3 GHz, and the average tuning rate with temperature is -2.6 GHz/ degrees C. A strong iodine absorption line can be covered within the laser frequency tuning range.
authors.affiliation: Division of Electricity and Quantum Metrology, National Institute of Metrology, 18 Beisanhuan East Road, Beijing 100013, China.
authors.forename: Er
authors.initials: E
authors.lastname: Jun Zang
authors.forename: Jian
authors.initials: J
authors.lastname: Ping Cao
authors.forename: Ye
authors.initials: Y
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
authors.forename: Dong
authors.initials: D
authors.lastname: Mei Hong