Marly B. Camargo

Co(2+):YSGG saturable absorber Q switch for infrared erbium lasers.

Passive Q switching of Er:glass (1.53 microm) with a new, robust, solid-state saturable absorber, Co(2+):Y(3)Sc(2)Ga(3)O(12), has been demonstrated. Q-switched pulses of 20 ns and 4 mJ of energy were obtained. An absorption cross section of 5 x 10(-20) cm(2) was measured. Preliminary results for a Co(2+):Y(3)Al(5)O(12) saturable absorber Q switch are also discussed.

U4+:SrF2 efficient saturable absorber Q switch for the 1.54 μm erbium:glass laser

Saturable absorber Q switching of the Er:glass laser at 1533 nm using U4+:SrF2 has been obtained. Q‐switched pulses of 3 mJ and 60 ns full width at half‐maximum were achieved using a 2.69‐mm‐thick Q switch in a 14‐cm‐long plane‐parallel cavity, with a 3×50 mm Kigre QE‐7S Er:glass rod. The high absorption cross section of U4+:SrF2 resulted in efficient Q‐switched operation (without intracavity focusing) in agreement with the theoretical predictions.

Passive Q‐switch at 1.53 μm using divalent uranium ions in calcium fluoride

Using a U2+:CaF2 passive Q‐switch for the Er:glass laser, 20 ns, 3 mJ pulses were obtained. This is the shortest duration passive Q‐switched pulse obtained for this laser without intracavity focusing and without optical damage. The measured U2+:CaF2 absorption cross section and relaxation lifetime are compared with those of U2+:SrF2 and U2+:BaF2.

Passive Q switching of the Er3+:Y3Al5O12 laser at 1.64 μm

Saturable‐absorber Q switching of an erbium‐doped Y3Al5O12 (YAG) laser at 1.64 μm using U2+:SrF2 and U2+:CaF2 was demonstrated. The Er:YAG was longitudinally pumped using a free‐running 1.534 μm Er:glass laser. Q switched 1.64 μm pulses of 1.7 mJ and 25 ns pulse widths were obtained.

Passive Q-switching of the Erbium:Glass Laser Using Er3+:CaF2

The advantages of passive Q-switching with Er3+:CaF2, as well as a phenomenological model of the 4I13/2, fluorescence decay, are presented.

Q-switch saturable absorber materials for solid state lasers

New solid-state passive Q-switch materials for the Er:glass laser at 1.53 micrometers are described. Saturable absorber Q-switching has been obtained using U4+:SrF2, Er3+:CaF2, and Er3+:Ca5(PO4)3F.

Passive Q-Switching of an Erbium Fiber Laser Using Uranium-Doped Fluoride Crystal Q-Switches

20 µJ, 200 ns passively Q-switched pulses with a repetition-rate of 1 kHz were obtained using a uranium-doped saturable absorber and a CW-pumped erbium-doped fiber.

Co/sup 2+/:Y/sub 3/Sc/sub 2/Ga/sub 3/O/sub 12/ (YSGG) passive Q-switch for infrared erbium lasers

Co:YSGG possesses a very broad absorption band from 0.9 to 1.8 /spl mu/m which is characteristic of transition-metal-ion-doped materials. We have investigated Co/sup 2+/ in YSGG as a possible saturable absorber Q-switch for 1.5 /spl mu/m Er:glass lasers.

Co2+:ZnSe Saturable Absorber Q-switch for the 1.54 µm Er3+:Yb3+:Glass Laser

A potentially superior eye-safe laser Q-switch material has been demonstrated. Pulses of 77 ns and 2.6 mJ were obtained in a non-focused Englass resonator.