High optical gain laser media-based on chalcone compound derivatives
A laser device includes a medium container, a gain medium contained in the medium container and optics configured to direct the laser to a sample. The optics preferably include no optical resonator around the gain medium. The gain medium is configured to receive energy to emit a laser and includes a first solvent and a compound dissolved therein. The compound conforms to formula (1): where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently hydrogen or an alkyl group. The laser media can function in both liquid as well as solid state and has shown a high optical gain of the order of 3.2 cm −1 in pulsed and continuous wave modes.
1. A laser device, comprising:
a medium container;
a gain medium contained in the medium container and configured to receive energy to emit a laser via amplified spontaneous emission (ASE), the gain medium comprising a first solvent and a compound dissolved therein; and
optics configured to direct the laser, the optics including no optical resonator around the gain medium,
wherein the compound conforms to formula (1):
where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently hydrogen or an alkyl group or a substituted heteroalkyl group having 1 to 6 carbon atoms.
2. The laser device of claim 1 , wherein:
the first solvent includes at least one selected from the group consisting of ethylene glycol and water.
3. The laser device of claim 2 , further comprising:
a second solvent selected from the group consisting of acetone, ethanol and dimethylformamide.
4. The laser device of claim 1 , wherein:
where R 1 , R 2 , R 3 , R 4 and R 6 are each independently hydrogen or an aliphatic group having 1 to 6 carbon atoms or a substituted heteroalkyl group having 1 to 6 carbon atoms, and
R 5 is hydrogen, a methyl group or an ethyl group.
5. The laser device of claim 4 , wherein:
R 1 , R 2 , R 3 and R 4 are each independently hydrogen, a methyl group, an ethyl group or a propyl group, and
R 5 is hydrogen or a methyl group.
6. The laser device of claim 4 , wherein:
R 1 , R 2 , R 3 , R 4 and R 6 are each independently hydrogen or a substituted heteroalkyl group having 1 to 6 carbon atoms.
7. The laser device of claim 1 , wherein:
R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen.
8. The laser device of claim 1 , further comprising:
a pump source configured to provide actinic energy to the gain medium so that the gain medium is excited to emit the laser.
9. The laser device of claim 1 , wherein:
the gain medium is configured to emit the laser in a range of 525-580 nm, and
the compound has a concentration of 0.1-8.0 mg/mL in the gain medium.
10. A method of laser production, the method comprising:
providing energy to a gain medium so that the gain medium emits a laser in a range of 525-580 nm via amplified spontaneous emission (ASE), wherein
the gain medium comprises a first solvent and a compound dissolved therein,
the compound has a concentration of 0.1-8.0 mg/mL in the gain medium,
the compound conforms to formula (1):
where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently hydrogen or an alkyl group or a substituted heteroalkyl group having 1 to 6 carbon atoms.
11. The method of claim 10 , wherein:
the first solvent includes at least one selected from the group consisting of ethylene glycol and water.
12. The method of claim 11 , further comprising:
a second solvent selected from the group consisting of acetone, ethanol and dimethylformamide.
13. The method of claim 10 , wherein:
where R 1 , R 2 , R 3 , R 4 and R 6 are each independently hydrogen or an aliphatic group having 1 to 6 carbon atoms or a substituted heteroalkyl group having 1 to 6 carbon atoms, and
R 5 is hydrogen, a methyl group or an ethyl group.
14. The method of claim 13 , wherein:
R 1 , R 2 , R 3 and R 4 are each independently hydrogen, a methyl group, an ethyl group or a propyl group, and
R 5 is hydrogen or a methyl group.
15. The method of claim 13 , wherein:
R 1 , R 2 , R 3 , R 4 and R 6 are each independently hydrogen or a substituted heteroalkyl group having 1 to 6 carbon atoms.
16. The method of claim 10 , wherein:
R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen.
17. The method of claim 10 , further comprising:
providing energy to the gain medium in a pulsed or continuous-wave mode.
18. A laser device, comprising:
a medium container;
a gain medium contained in the medium container and configured to receive energy to emit a laser via amplified spontaneous emission (ASE), the gain medium comprising a compound in solid state and no solvent; and
optics configured to direct the laser, the optics including no optical resonator around the gain medium,
wherein the compound conforms to formula (1):
where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently hydrogen or an alkyl group or a substituted heteroalkyl group having 1 to 6 carbon atoms.
19. The laser device of claim 18 , wherein:
R 1 , R 2 , R 3 , R 4 and R 6 are each independently hydrogen or an aliphatic group having 1 to 6 carbon atoms, and
R 5 is hydrogen, a methyl group or an ethyl group.
20. The laser device of claim 18 , wherein:
R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen.