Single frequency operation of a tunable injection-seeded Nd:GSAG Q-switched laser around 942nm

Abstract

Single frequency operation of a diode-pumped tunable injection-seeded Nd:GSAG Q-switched laser around 942nm was demonstrated. With a three-mirror ring cavity, the single frequency laser pulse with output energy of 13.2mJ was obtained at a repetition rate of 10Hz. The linewidth of the single frequency laser was less than 100MHz. The wavelength of the single frequency Nd:GSAG laser can be tuned from 942.38nm to 943.10nm.

Stable and tunable single frequency Nd:GSAG laser around 943 nm

“…In 20 measurements, the energy stability was observed as better than 3%. It shows significantly improved stability of the pulse energy compared to our previous work [19], where the energy stability was ∼20%.…”

“…The difference of the pulse buildup time was within 10 ns and the pulse energy fluctuation was lower than 3%. Compared to previous works [7,10,12,14,19], the locking probability and operation stability were greatly improved.…”

“…Compared to the ring laser [19], the output power and optical-optical efficiency were increased by a factor of more than 2.…”

“…INNOSLAB-based MOPA design was applied to a Nd:YGG oscillator to scale the output pulse energy to 30 mJ [16,17]. Nd:GSAG has been studied in our laboratory and the single frequency operation was obtained recently [9][10][11]18,19].…”

Effective segregation during Czochralski growth and spectral properties of Nd3+ in GSAG crystal

“…Strohmaier et al [5] and Zhang et al [6] also reported the diode-pumped Nd:GSAG and Nd:YGG lasers at 942 nm and 935 nm. Recently, stable LD-pumped modelocked and tunable single frequency injection-seeded Q-switched Nd:GSAG lasers around 942 have been demonstrated for the further development of quasi-three-level Nd 3+ lasers [7,8].…”