Journal article
Adding a second AgGaS 2 stage to Ti:sapphire/BBO/AgGaS 2 setups increases mid-infrared power twofold
Optics letters, Vol.48(18), pp.4797-4800
09/15/2023
DOI: 10.1364/OL.496376
PMID: 37707905
Abstract
We present a method for increasing the power of mid-infrared laser pulses generated by a conventional beta-barium borate (BBO) optical parametric amplifier (OPA) and AgGaS 2 difference frequency generation (DFG) pumped by a Ti:sapphire amplifier. The method involves an additional stage of parametric amplification with a second AgGaS 2 crystal pumped by selected outputs of the conventional DFG stage. This method does not require additional pump power from the Ti:sapphire laser source and improves the overall photon conversion efficiency for generating mid-infrared light. It merely requires an additional AgGaS 2 crystal and dichroic mirrors. Following difference frequency generation, the method reuses near-infrared light (∼1.9 µm), typically discarded, to pump the additional AgGaS 2 stage and amplifies the mid-infrared light twofold. We demonstrate and characterize the power, spectrum, duration, and noise of the mid-IR pulses before and after the second AgGaS 2 stage. We observe small changes in center frequencies, bandwidth, and pulse duration for ∼150-fs pulses between 4 and 5 µm.
Details
- Title: Subtitle
- Adding a second AgGaS 2 stage to Ti:sapphire/BBO/AgGaS 2 setups increases mid-infrared power twofold
- Creators
- Whitney HarmonKevin RobbenChristopher M. Cheatum
- Resource Type
- Journal article
- Publication Details
- Optics letters, Vol.48(18), pp.4797-4800
- DOI
- 10.1364/OL.496376
- PMID
- 37707905
- ISSN
- 0146-9592
- eISSN
- 1539-4794
- Grant note
- DOI: 10.13039/100000001, name: National Science Foundation, award: CHE-2102048
- Language
- English
- Date published
- 09/15/2023
- Academic Unit
- Liberal Arts and Science Admin; Chemistry
- Record Identifier
- 9984463079702771
Metrics
12 Record Views