Chalcone Gain Media for Visible Lasers
Official patent title
High optical gain laser media-based on chalcone compound derivatives
Arabic title: أوساط ليزر عالية الكسب البصري قائمة على مشتقات مركبات الكالكون
Invention
Invention
Problem
Few laser gain media combine operation in liquid and solid states, pulsed and continuous-wave excitation, and tunability below 570 nm without a conventional resonator around the medium.
Why it matters
A versatile visible-range gain medium could expand design options for tunable light sources, spectroscopy, sensing, and laboratory photonics.
Approach
The patent uses a chalcone derivative as a liquid or solid gain medium that emits by amplified spontaneous emission, with optics that direct the output without an optical resonator around the gain medium.
Who may benefit
Potential beneficiaries include laser-source manufacturers, photonics laboratories, spectroscopy and sensing companies, optical-instrument developers, and specialty chemical producers.
Potential value
One chalcone-based platform is described for solvent-based and solid-state formats, pulsed or continuous-wave pumping, and claimed visible emission at 525–580 nm, simplifying exploration across several laser configurations.
Background
Background
Common laser dyes and gain media often operate only in a liquid or solid format, within a limited wavelength range, or under either pulsed or continuous-wave excitation. Rhodamine dyes can work in liquid continuous-wave systems but have limited ranges and weaker solid-state operation, while some solid-state systems tune only at longer wavelengths. Chalcones are conjugated molecules whose substituents can modify intramolecular charge transfer and optical behavior. The patent applies a substituted chalcone family to amplified spontaneous emission in both solvent and solvent-free media.
Technology overview
Technology overview
The laser device contains a chalcone derivative of Formula (1) in a first solvent such as ethylene glycol or water, optionally with acetone, ethanol, or dimethylformamide. A pump source excites the gain medium to produce amplified spontaneous emission at a claimed 525–580 nm with 0.1–8.0 mg/mL compound. The same compound family is also claimed as a solvent-free solid gain medium. The patent reports pulsed and continuous-wave operation and an optical gain on the order of 3.2 cm−1.
Potential applications
Potential applications
- Potential use in tunable visible-light sources for laboratory spectroscopy.
- Potential use in compact amplified-spontaneous-emission devices.
- Potential use in optical sensing and photonic instrumentation.
- Potential use in research comparing liquid and solid organic gain media.
Evidence-supported advantages
Evidence-supported advantages
- Covers both solvent-based and solvent-free solid gain-medium formats.
- Supports claimed pulsed and continuous-wave excitation modes.
- Targets a defined visible emission range of 525–580 nm.
- Uses optics without an optical resonator surrounding the gain medium.
Development stage
Development stage
Patent publication with reported gain-medium preparation and optical testing; commercialization and independent device-performance validation were not established.
Commercial opportunity
Commercial opportunity
The platform may support licensing to specialty laser-dye, photonics, or instrumentation developers. Commercial development would require independent optical-gain verification, lifetime and photobleaching studies, pump-source integration, thermal management, solid-film manufacturability, solvent and material safety assessment, and comparison with established gain media.
Patent classifications
Patent classifications
WIPO IPC
- H01S3/20Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
- C09K11/02Materials for applications not otherwise provided for; applications of materials not otherwise provided for
CPC
- C09K11/025Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K11/06Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- H01S3/094Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
- H01S3/1611Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
- H01S3/1643Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
- H01S3/20Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
- C09K2211/1007Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- C09K2211/1018Materials for applications not otherwise provided for; applications of materials not otherwise provided for
- H01S2301/02Devices using light amplification by stimulated emission of radiation [LASER] to amplify or generate light; stimulated-emission devices for non-optical electromagnetic radiation
Inventors
Inventors
- First inventorKhalid Hassan Ibnouf Ahmed
- InventorOsamah Abdulrahman Aldaghri
- InventorHajo Idriss Mohammed Idriss
- InventorAmin Osman Elzupir Alamalhuda
Keywords
Keywords
- chalcone
- laser gain medium
- amplified spontaneous emission
- continuous wave
- pulsed laser
- solid-state medium
- visible laser
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.