Double chirped mirror
AssigneeSpectra-Physics Lasers, Inc.
InventorsFranz X. Kartner, Nicolai Matuschek, Ursula Keller
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Abstract
The invention is a double chirped mirror and a method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and having refractive indices which vary between layers in the plurality of layers, and wherein for a first set of layers the optical thickness of alternate layers in the set of layers varies monotonically and the total optical thickness of a layer and the two adjacent half layers in the set of layers varies monotonically. The design is optimized by adjusting the optical thickness of layers in the plurality of layers.
Claims30
A method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising:
- specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and having refractive indices which vary between layers in the plurality of layers and
- wherein for a first set of layers the optical thickness of alternate layers in the set of layers varies monotonically and the total optical thickness of a layer and the two adjacent half layers in the set of layers varies monotonically;
- and
- optimizing the design by adjusting the optical thickness of layers in the plurality of layers.
A method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising:
- specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and having refractive indices which vary between layers in the plurality of layers
- specifying a first set of layers in the plurality of layers wherein layers in the first set of layers include a double chirp;
- specifying a second set of layers in the plurality of layers adjacent to the first set of layers wherein layers in the second set of layers include a simple chirp;
- optimizing the design by adjusting the optical thickness of layers in the plurality of layers.
A double chirped mirror for a frequency range of electromagnetic radiation, comprising:
- a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and having refractive indices which vary between layers in the plurality of layers and
- wherein for a first set of layers the optical thickness of alternate layers in the set of layers varies monotonically and the total optical thickness of a layer and the two adjacent half layers in the set of layers varies monotonically;
- and
- optimizing the design by adjusting the optical thickness of layers in the plurality of layers.
A method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising:
- specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and having refractive indices which vary between layers in the plurality of layers and
- wherein for a first set of layers in the plurality of layers the optical thickness of a layer is the same as the optical thickness of two adjacent half layers in the set of layers, and the total optical thickness of the layer and the two adjacent half layers in the first set of layers varies monotonically and
- wherein for a second set of layers in the plurality of layers the second set of layers comprises an antireflection coating;
- and
- optimizing the design by adjusting the optical thickness of layers in the plurality of layers.
Dependencies are inferred from the claim text.