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AssigneeInstitut Franco-Allemand de Recherches de Saint-Louis
InventorsAntoine HIRTH, Christelle KIELECK
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The present invention especially concerns the field of lasers. Specifically, the object of the invention is a process for the emission of pulsed laser radiation generated by at least one laser crystal which is located in a cavity containing a first and a second mirror and pumped by des pumping means, wherein said process includes a first stage which consists of generating a first pumping laser radiation with an intensity of Jc which is capable of bringing the crystal at least to the laser emission threshold and a second stage which consists of generating a second pumping laser radiation with an intensity of Jp in the form of a step, whereby said second radiation is superimposed, at least in part, on said first radiation or immediately succeeds it, and whereby the intensity Jp, in the latter case, is greater than the intensity Jc of said first radiation, as well as a laser source capable of activating said process.
1-13. (canceled)
A process for the emission of low frequency pulsed infrared laser radiation generated by at least one holmium, thulium or erbium doped laser crystal which is located in a cavity consisting of a first and a second mirrors and pumped by pumping means, wherein the process comprises a first step comprising generating a pumping laser radiation with an intensity of Jc which is capable of bringing the crystal at least to the laser emission threshold and a second step comprising generating a second pumping laser radiation with an intensity of Jp in the form of a step, whereby the second radiation is superimposed, at least in part, on the first radiation or immediately succeeds it, and whereby the intensity Jp, in the latter case of the second radiation, is greater than the intensity Jc of the first radiation.
A laser source capable of generating low frequency infrared laser pulses, comprising pumping means capable of pumping a holmium, thulium or erbium doped laser crystal which is located in a cavity delimited by a first and a second mirror, the pumping means being capable of generating a pumping laser radiation with an intensity of Jp in the form of a step, wherein the pumping means is capable of generating a first pumping laser radiation with an intensity of Jc which is capable of bringing the crystal at least to the laser emission threshold and the pumping means being capable of generating a second pumping laser radiation with an intensity of Jp in the form of a step, whereby the second pumping laser radiation is superimposed, at least in part, on the first radiation or immediately succeeds it, and whereby the intensity Jp, in the latter case of the second pumping laser radiation, is greater than the intensity Jc of the first pumping laser radiation.
Dependencies are inferred from the claim text.