Abstract: Disclosed here are methods, devices, and systems for generating an output light beam for a pulsed laser. An example method may comprise generating one or more pump optical beams comprising at least two photons having a pump wavelength. A first nonlinear stage may convert the at least two photons to a first photon having a first wavelength that is half of the pump wavelength. The first optical beam may be caused to spatially overlap with a seed optical beam. At least two second nonlinear stages separated by a gap may be used to convert, based on the seed optical beam, the first photon to a second photon having a second wavelength and a third photon having a target wavelength greater than the pump wavelength. A third nonlinear stage may convert the second photon to a fourth photon and a fifth photon each having the target wavelength or having a wavelength within an offset range of the target wavelength.

Abstract: Disclosed here are methods, devices, and systems for generating an output light beam for a pulsed laser. An example method may comprise generating one or more pump optical beams comprising at least two photons having a pump wavelength. A first nonlinear stage may convert the at least two photons to a first photon having a first wavelength that is half of the pump wavelength. The first optical beam may be caused to spatially overlap with a seed optical beam. At least two second nonlinear stages separated by a gap may be used to convert, based on the seed optical beam, the first photon to a second photon having a second wavelength and a third photon having a target wavelength greater than the pump wavelength. A third nonlinear stage may convert the second photon to a fourth photon and a fifth photon each having the target wavelength or having a wavelength within an offset range of the target wavelength.

Abstract: A crowbar of the present invention includes a shaft, a curved neck at one end of the shaft, a straight section extending from the end of the curved neck, and a pivot arm positioned substantially at the junction between the curved neck and the straight section. The pivot arm is positioned above the straight section and preferably forms an angle of about 90° with the straight section. Additionally, the pivot arm is relatively short, having a length of less than 4″. Preferably, the pivot arm has a length of about 2″ to about 4″. Additionally, although the crowbar could be supplied with a single pivot arm, it is preferably supplied with two pivot arms extending in opposite directions from each other.

Abstract: Individual Breast Wipes are handy moistened absorbent wipes that will clean the breast nipple area of mothers in preparation for breast-feeding. The function of the wipes will eliminate the problems of mothers after delivery. It will give them the assurance that the breast is clean and that they do not have to get out of bed to get a paper towel to clean their breast after delivery.

Abstract: A collapsible stair lift is operable between an upper floor level and a lower floor level. The lift has a set of collapsing steps that lower from their normal in use condition to a position in which the treads of the various steps are flush with the lower floor. A platform is located at the top of the stairs and lowers from the top of the stairs to a position flush with the stair treads. The unit is particularly useful in domestic environments where space is limited.