| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 733284 | Optics & Laser Technology | 2015 | 6 Pages |
•KTP IOPO driven by a KLM Nd:GGG laser is first reported.•Low repetition rate and subnanosecond pulse width of signal wave are obtained.•The minimum pulse duration is estimated to be 749 ps.•Rate equations for KLM laser pumping IOPO is set up firstly.
An intracavity KTiOPO4 (KTP) optical parametric oscillator (OPO) pumped by a Kerr lens mode-locking (KLM) Nd:GGG laser near 1062 nm with a single AO modulator was realized for the first time. The mode-locking pulses of the signal wave were obtained with a short duration of subnanosecond and a repetition rate of several kilohertz (kHz). Under a diode pump power of 8.25 W, a maximum output power of 104 mW at signal wavelength near 1569 nm was obtained at a repetition rate of 2 kHz. The highest pulse energy and peak power were estimated to be 80 μJ and 102 kW at a repetition rate of 1 kHz, respectively. The shortest pulse duration was measured to be 749 ps. By considering the Gaussian spatial distribution of the photon density and the Kerr-lens effect in the gain medium, a set of the coupled rate equations for QML intracavity optical parametric oscillator are given and the numerical simulations are basically fitted with the experimental results.
