title: Efficient 750-nm LED-pumped Nd:YAG laser.
abstract: We report an Nd:YAG laser pumped by light emission diodes (LEDs) at 750 nm. With 1% output coupling from a linear cavity containing a 2-cm long Nd:YAG crystal, the laser generated 37.5 μJ pulse energy at 1064 nm with M2= 1.1 when pumped by 2.73-mJ LED energy in a 1-ms pulse at a 10 Hz rate. The measured optical and slope efficiencies for this linear-cavity laser are 1.36, and 9%, respectively. With 1 and 5% output couplings from a Z-cavity containing the same laser crystal, the lasers generated 346 and 288 μJ pulse energy with an optical efficiency of 3.4 and 2.8% and slope efficiency of 6.6 and 14%, respectively, for the same 1-ms pump pulse repeating at a 10 Hz rate. At the highest output from the Z-cavity, the measured M2for the beam is 3.6.
authors.forename: Kuan-Yan
authors.initials: KY
authors.lastname: Huang
authors.forename: Cheng-Kuo
authors.initials: CK
authors.lastname: Su
authors.forename: Meng-Wei
authors.initials: MW
authors.lastname: Lin
authors.forename: Yu-Chung
authors.initials: YC
authors.lastname: Chiu
authors.forename: Yen-Chieh
authors.initials: YC
authors.lastname: Huang