CW and Q-switched Nd:YAG fiber lasers
The work reported here represents continued development of fiber laser sources. Fiber lasers made of Nd:YAG were evaluated experimentally in a cw mode of operation at a signal wavelength of 1.319 ..mu..m. Dye laser pumping at lambda/sub p/ = 0.808 ..mu..m was implemented for the first time as a prelude to a laser-diode pumping at this wavelength. These same lasers were also operated at a wavelength of 1.064 ..mu..m in order to gain some insight into the nature of the loss in fiber lasers. Low device thresholds and high pump/signal conversion efficiencies were demonstrated at both signal wavelengths. Some of these fiber lasers were surrounded by a high index cladding layer for the first time that tended to reduce the loss per unit length in the fiber. Q-switched laser action was also demonstrated and characterized for the first time in fiber lasers using both mechanical and passive methods. Theoretical models, developed under this program for both cw and Q-switched fiber lasers, indicate that they can have much lower thresholds than their conventional counterparts because of the guided-wave nature of the interaction between the pump and signal fields in this type of device.
- Research Organization:
- Stanford Univ., CA (USA)
- OSTI ID:
- 7201214
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phase-matched light amplification by three-wave mixing process in a birefringent fiber due to externally applied stress
Heat generation in Nd:YAG and Yb:YAG