US Patent No: 7,046,703
Number of patents in Portfolio can not be more than 2000
Bessel free electron laser device
Stats
-
May 16, 2006
Issued date -
Dec 18, 2003
filing date -
10/740,965
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
Methods and apparatus are provided for modifying a free electron laser (FEL) to produce a non-diverging laser beam. A relativistic electron beam is converted to a Bessel beam in an FEL resonator with conical end mirrors, and the Bessel beam is coupled to the optical field within the laser resonator. The resultant laser beam is propagated with minimal divergence, and is wave corrected at the resonator output to produce a uniform intensity circular beam. The laser beam can be of smaller diameter than that of a conventional resonator due to its diffractionless propagation, which enables the magnetic structure gap within the resonator to be smaller, thus producing a higher optical gain.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,210,389 Bond and method of making the same | 19 | 1978 | |
| 4,284,963 Etalon laser diode | 13 | 1979 | |
| 4,439,014 Low voltage electro-optic modulator | 32 | 1981 | |
| 4,699,465 Laser diode array with phase correction | 8 | 1986 | |
| 4,751,707 Laser diode array exhibiting transverse lasing | 5 | 1986 | |
| 4,903,341 Semiconductor optical heterodyne detector | 12 | 1987 | |
| 5,283,844 Monolithic active waveguide optical crossbar switch | 18 | 1992 | |
| 5,495,490 Immersion method and apparatus for cooling a semiconductor laser device | 25 | 1995 | |
| 5,694,408 Fiber optic laser system and associated lasing method | 86 | 1996 | |
| 5,715,270 High efficiency, high power direct diode laser systems and methods therefor | 30 | 1996 | |
| 5,847,816 Fiber optic micro-doppler ladar system and operating method therefor | 42 | 1997 | |
| 5,847,817 Method for extending range and sensitivity of a fiber optic micro-doppler ladar system and apparatus therefor | 20 | 1997 | |
| 5,832,006 Phased array Raman laser amplifier and operating method therefor | 25 | 1997 | |
| 5,867,257 Battlefield personnel threat detection system and operating method therefor | 29 | 1997 | |
| 5,946,130 Optical fiber amplifier network having a coherently combined output and high-power laser amplifier containing same | 37 | 1997 | |
| 6,200,309 Photodynamic therapy system and method using a phased array raman laser amplifier | 44 | 1998 | |
|
|
|||
| 6,363,087 Multimode raman fiber amplifier and method | 5 | 2000 | |
| 6,339,605 Active mirror amplifier system and method for a high-average power laser system | 28 | 2000 | |
| 6,600,946 Methods and apparatus for quantifying dermal hydration | 22 | 2000 | |
| 6,625,354 Fiber amplifier having a prism for efficient coupling of pump energy | 9 | 2000 | |
| 2003/0042,404 III-Nitride laser activated semiconductor switch and associated methods of fabrication and operation | 1 | 2001 | |
| 6,598,478 Micro-doppler microscope | 3 | 2001 | |
|
|
|||
| 5,677,923 Vertical cavity electron beam pumped semiconductor lasers and methods | 10 | 1996 | |
| 5,841,802 Multiple, isolated strained quantum well semiconductor laser | 17 | 1996 | |
| 5,781,229 Multi-viewer three dimensional (3-D) virtual display system and operating method therefor | 48 | 1997 | |
| 5,807,764 Vertical cavity electron beam pumped semiconductor lasers and methods | 8 | 1997 | |
|
|
|||
| 4,679,197 Gyro free electron laser | 7 | 1985 | |
|
|
|||
| 6,061,170 Dual frequency laser amplifier array and operating method therefor | 35 | 1998 | |
|
|
|||
| 6,651,799 Modular pallet indexing chassis for automated manufacturing and assembly operations | 4 | 2001 | |
|
|
|||
| 6,587,497 Birefringence compensation using a single pump | 4 | 2000 | |
|
|
|||
| 4,530,096 Lowbitron - a source of coherent electromagnetic radiation | 10 | 1982 | |
|
|
|||
| 5,375,130 Azimuthal and radial polarization free-electron laser system | 9 | 1993 | |
|
|
|||
| 4,428,601 Y-Connection for flexible conduit | 2 | 1981 | |
| 4,491,349 Y-Connection for flexible conduit | 7 | 1983 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 16, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 16, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |