Microjoule amplifier system for three photon microscopy utilizing existing femtosecond lasers used for two photon microscopy as a seed source
US11353773B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2019 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Aug 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2316
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are ideas to produce an add-on device which turns widely used high repetition rate lasers used for 2-photon microscopy into a light source which can be used for 3-photon microscopy. The add-on encompasses a device to reduce the pulse repetition rate of the high repetition rate (>50 MHz) laser source (laser or OPO) to less than 10 MHz which allows for higher pulse energies while maintaining reasonable average powers. If the high repetition sources operate below 1250 nm the add-on shifts or broadens the seed light to cover 1.3 μm to 1.8 μm before amplification. If the high repetition rate source operates at or around 1.3 μm the add-on only needs to amplify the pulse after downshifting the repetition rate. In another implementation the add-on shifts or broadens the 1.3 μm light to cover the spectral range out to 1.8 μm before amplification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.