Simple powerful tunable single‐mode and mode‐locked TEA CO2 laser

Powerful ultrabroadly tunable LW:F2+** laser

The LiF:F2+** laser has been shown' to provide high power (hundreds ofmJ), efficient (tens of%), room temperature stable laser operation tunable from 800 nm to nearly 1210 nm. However, no reasonable explanations were provided for such an ultrabroadband tuning capability using this active medium. This work describes the mechanism ofthe ullrabroadband lasing from LiF:F2+** und Alexandrite 1asa pu...

Powerful, room-temperature stable LiF:F2** tunable laser

A powerful photoand thermostable, LiF:Fj** color center laser pumped by radiation at 740 nm (alexandrite laser) or at 683 nm (Raman shifted (H2) second harmonic of a Nd:YAG laser) is described. This is the first time an average power as high as —1.4 W and an energy per pulse as high as 1OOmJ, with record real efficiency of 53% (683 nm pumping) and 28% (740 nm pumping) were achieved for a room t...

Multiwavelength Modelocked Semiconductor Diode Laser

A Regeneratively Modelocked , Fiber Ring Laser

This thesis addresses some of the issues relating to the construction of a regeneratively modelocked, fiber ring laser for high repetition rates. The equations governing feedback are derived, and experimental performance of the system with various filter bandwidths are given. The results are compared with those of active modelocking without stabilization. Pulse stabilization in the actively mod...

Switch-less operation of a TEA CO2 laser.

We report here the operation of a UV pre-ionised mini-TEA CO2 laser where the use of an external switch has been dispensed with. This was rendered possible by making the preioniser spark array play a dual role- that of a switch as well as of a source of UV photons that pre-conditioned the inter-electrode volume.