Dual frequency vertical external cavity surface emitting laser device for THz generation and method for generating THz

摘要

A laser device (100) that generates a light wave (107) comprising at least two frequencies, the laser device (100) comprising a first element (111) comprising a gain region (104) and a first A second mirror (106)) that is separate from the element (111) of the first and configured to form an optical cavity including the gain region (104) with the first mirror (103). Two mirrors (106)) and means (120) for exciting the gain region (104) to produce a light wave (107), wherein the laser device (100) comprises a light wave (100) Means for shaping the light intensity of the light wave (107) configured to select at least two transverse modes of 107; and a longitudinal and / or transverse phase profile of the light wave (107) Molding a, and and means configured to adjust at least two transverse mode of the light wave (107), the laser device (100).