Zhifeng Lin

Stable single-frequency output at 2.01 μm from a diode-pumped monolithic double diffusion-bonded Tm:YAG nonplanar ring oscillator at room temperature

We demonstrate a monolithic double diffusion-bonded monolithic Tm:YAG nonplanar ring laser pumped by a fiber-coupled laser diode. Up to 867 mW single-frequency output at 2.01 microm was obtained from the Tm:YAG system at room temperature, with a slope efficiency and an optical-optical efficiency of 31.6% and 19.2%. The power stability of the single frequency laser was 0.32% within 30 min.

Experimental investigation of pulse diodes side-pumped 2 μm Tm:YAG lasers

The free running and Q-switched operation of 2 μm Tm:YAG lasers side-pumped by pulse laser diodes were reported. In the free running mode the maximum output energies were 102.5 mJ at 1 Hz and 94.6 mJ at 10 Hz, respectively. With an acousto-optic modulator in the laser resonator, 21 mJ 2 μm Q-switched pulse was obtained, with a pulse width of about 330 ns. The dependences of the output energy and the efficiency on the laser resonator parameters were investigated.

Single-frequency operation of diode-pumped 2 μm Q-switched Tm:YAG laser injection seeded by monolithic nonplanar ring laser

We present a diode-pumped, 2mum single-frequency Q-switched Tm:YAG laser. The Q-switched laser is injection seeded by a monolithic Tm:YAG nonplanar ring oscillator with the ramp-hold-fire technique. The output energy of the 2mum single-frequency Q-switched pulse is 2.23mJ, with a pulse width of 290ns and a repetition rate of 200Hz. From the heterodyne beating measurement, the frequency difference between the seed laser and the Q-switched laser is determined to be 37.66MHz, with a half-width of the symmetric spectrum of about 2 MHz.

Diode Pumped Monolithic Single Frequency Solid-State Lasers for Coherent Detection Applications

Laser diode pumped single frequency, narrow-linewidth solid state lasers have important applications in coherent detection systems. This paper reports two kinds of diode pumped single frequency solid state lasers with wavelengths of 1319nm and 2μm, respectively. The LD pumped monolithic non-planar ring resonators (NPRO) are designed to generate the single frequency operation. High efficiency single frequency lasers were obtained in the 1319nm NPRO Nd:YAG laser and the 2μm NPRO Tm:YAG laser.