Mode-locked laser

Details Mode-locked laser Mode-locked laser

1988-10-27

1990-04-03

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Mode locking

372 21, 372 99, 372108, H01S 3098

Patent

active

049146580

ABSTRACT:
Mode-locked laser comprising an active medium for the emission of a fundatal frequency radiation w1, with a resonator which is defined by a first mirror and a second mirror and in which the active medium is disposed, and a nonlinear optical means which is arranged between the active medium and the second mirror and which in combination with the second mirror effects a preferred reflection of radiation of higher intensity compared with radiation of lower intensity and it converts a fundamental-frequency radiation reversibly into radiation of a first frequency and radiation of a second frequency in such a manner that with increasing intensity the fraction of the radiation of the second frequency increases, and that the second mirror reflects at the second frequency to a greater extent than at the first frequency. A further development of said laser comprises a means for coupling laser radiation of a further frequency w2 into the nonlinear means and a reflector arrangement which is arranged in the path of radiation emerging from the nonlinear means and for the fundamental-frequency radiation w1 and the radiation of the other frequency has a lower reflectivity than for radiation (w1+w2; w1-w2) which arises by interaction of the two laser radiations in the nonlinear means. In this manner a simple synchronization of the mode-locked laser with the coupled-in laser radiation is possible. The coupled-in laser can originate from a second laser medium which is arranged in a second resonator which has a part in common with the first resonator.

REFERENCES:
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patent: 4348599 (1982-09-01), Pradere et al.
patent: 4349907 (1982-09-01), Campillo et al.
patent: 4618783 (1986-10-01), Pradere et al.
patent: 4682340 (1987-07-01), Dave et al.
patent: 4829528 (1989-05-01), Band et al.

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