Patent
Single-mode laser
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TLDR
In this article, a single-mode laser provided with a folded optical resonator is described. But the device is intended for use e.g. in ophthalmology or elsewhere where the laser pulses characterized above are required.Abstract:
The invention relates to a single-mode laser provided with a folded optical resonator, comprising a laser rod 1, resonator mirrors 3A, 3B deposited by evaporation on a single mirror plate 3, a stop 6 provided with two separate apertures 6A, 6B which are overlapped by the laser rod 1 when they are viewed along it and which are located so that the rays traversing the aperture 6A or 6B towards the resonator mirrors 3A, 3B, respectively, completely impinge only on the high reflecting resonator mirror 3A or on the semitransparent resonator mirror 3B, a foil Q-switch 5 and a reversing prism 4. The device according to the invention is compact, of moderate price and is provided with a dynamically stable optical resonator, it generating single-mode laser pulses with a divergence below 2 mrad, but with an energy about 15 mJ and with a width about 10 nsec. The device according to the invention is intended for use e.g. in ophthalmology or elsewhere where the laser pulses characterized above are required.read more
Citations
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John W. Hobbs,Laurence E. Cramer +1 more
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References
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Patent
Cooled laser q-switch
TL;DR: In this paper, cooling of a laser passive Q-switch is provided by affixing the Q-switching to the rear mirror of the laser which acts as a heat sink for the switch.
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Folded cavity laser for holography
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Laser with two reflectors forming optical resonator - has both reflectors on common support opposite one laser medium face, with specified reflector axes
TL;DR: In this article, the common support of the laser reflectors is mounted opposite a face of a laser medium, such that one reflector (3) optical axis coincides with that of the light medium (rod) while the other reflector(4) is offset to be parallel to the first axis, which forms a reference for the reflexion planes of the reflectors.