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semiconductor lasers News
Partners in Production
Jul 1, 2004 — The first semiconductor lasers were produced in the laboratory in the early 1960s. Just months after their development, they were available for sale, their reliability and efficiency generating interest in the marketplace. Of course, the design and the manufacturing processes were immature, so this promising technology came at a stiff price: several thousand dollars for less than a milliwatt of power. Furthermore, they were not always reliable. Forty years of development have improved our...
Comlase Receives Venture Funding
Jun 22, 2004 — STOCKHOLM, Sweden, June 22 -- Comlase, a Stockholm-based developer of process technology and equipment for the production of high-power semiconductor lasers and optoelectronic devices, announced it has completed a new round of venture funding of an...
Mirror Enhances Diode Laser Bar's Beam
Apr 1, 2004 — The diode laser bar, which consists of multiple diode lasers on a single substrate, is the workhorse of semiconductor lasers. Commercial units with outputs of 100 W and higher are on the market, and laboratory devices have demonstrated outputs of...
Tunable Distributed Bragg Reflector Lasers Introduced at OFC
Apr 1, 2004 — Two vendors introduced similar, widely tunable, monolithic lasers at the Optical Fiber Conference (OFC) held in Los Angeles from Feb. 23 to 27, and the companies' scientists presented papers describing the lasers at the conference's technical...
Waveguides Force Diode Laser into Single Mode
Mar 1, 2004 — Semiconductor lasers oscillating in a single, fundamental lateral mode produce a better-quality beam than multimode lasers, but single-mode oscillation is difficult to obtain. One approach has been to fabricate a waveguide into the semiconductor...
Spectra-Physics Forms Strategic Marketing Group
Dec 8, 2003 — MOUNTAIN VIEW, Calif., Dec. 8 -- Spectra-Physics announced it has created a new strategic marketing group that will focus on four key market segments: microelectronics, industrial manufacturing, medical/biotechnology and research. In addition to...
Researchers Build Semiconductor Laser Using Photonic Crystal
Nov 4, 2003 — MURRAY HILL, N. J., Nov. 4 -- In what they call "an experimental tour de force," a team led by scientists from Bell Labs, the research and development arm of Lucent Technologies, has built a novel semiconductor laser that may have numerous...
Firm Wins Contract to Develop Chiral Laser
Nov 1, 2003 — Chiral Photonics Inc. of Clifton, N.J., plans to develop and prototype chiral fiber lasers under a three-year, $2 million grant from the National Institute of Standards and Technology's Advanced Technology Program. At roughly one-fifth of the cost,...
MEMS Enable Tunable Lasers for Telecom
Nov 1, 2003 — Dynamically reconfiguring next-generation fiber optic telecom systems will require wavelength-tunable lasers that can provide a signal into any wavelength division multiplexed channel and that can switch among channels on the fly. Researchers around...
Fiber Laser Is Wavelength-Tunable for the S-Band
Oct 1, 2003 — A group at the National Chiao-Tung University in Hsinchu, Taiwan, has capitalized on recent successes with S-band erbium-doped fiber amplifiers to design and demonstrate a wavelength-tunable fiber laser for this telecommunications band. Wavelength-...
Grating Enables Tunable Fiber Laser for Telecom
Oct 1, 2003 — Today's fiber optic telecom systems use a different fixed-frequency semiconductor laser to transmit each channel into the optical fiber. If these individual lasers were tunable -- that is, capable of switching from one wavelength channel to another...
Mode-Locked Ring Laser Produces 274-fs Pulses
Oct 1, 2003 — Scientists at the University of Central Florida in Orlando have developed a "breathing mode" semiconductor laser with mode-locked, externally compressed 274-fs pulses. The approach promises semiconductor lasers capable of producing even shorter...
Feedback Stabilizes High-Power Diode Lasers
Sep 1, 2003 — High-power, broad-area semiconductor lasers exhibit spatial and temporal instabilities due to fundamental nonlinear interactions between the intense optical field and the semiconductor material. These interactions result in a broad spectral emission...
Fiber Laser Pumps Fiber Lasers for Telecommunications Applications
Jul 1, 2003 — A coalition of British and Russian telecom engineers has developed a fiber laser system that may boost performance and cut costs when substituted for the traditional diode laser transmitters in wavelength division multiplexing (WDM) networks. The...
Standardization of Laser Diode Lifetime Testing
Jul 1, 2003 — Laser diodes are well-established in both telecom and commercial applications. Semiconductor laser sources emitting power in the milliwatt range are produced in millions. Besides other specific attributes, they are characterized by high efficiency,...
Filter Enables 23-Channel Laser
Apr 1, 2003 — Transmitters for dense wavelength division multiplexing (DWDM) consist of banks of lasers, with one laser for each channel. It would be nice if a single laser could produce a comb of frequencies exactly aligned with the channels. Researchers at Bell...
Gratings Offer New Breed of Tunable Laser
Apr 1, 2003 — Researchers worldwide are pursuing several approaches to building tunable lasers that will enable future telecom systems to be quickly reconfigured for maximum transmission efficiency. Some approaches involve changing the feedback frequency of the...
Multiwavelength Lasers Simplify WDM Networks and Applications
Mar 1, 2003 — Mode-locked lasers are common tools for producing short pulses in the time domain, including telecommunications applications at multigigahertz repetition frequencies that require tunability in the C-band. Now they also can work as multiwavelength...
Aculight to Demonstrate Laser Technology
Feb 1, 2003 — The US Air Force Research Laboratory in Albuquerque, N.M., has awarded Aculight Corp. of Bothell, Wash., a three-year, $3 million contract for the development of semiconductor lasers for aircraft defense systems. Aculight will incorporate its...
Photodigm Claims Laser Breakthrough
Jan 27, 2003 — RICHARDSON, Texas, Jan. 27 -- Photodigm Inc. said that it has developed 1310 nm Grating-outcoupled Surface Emitting (GSE) laser technology that yields devices with single-mode output powers up to 6mW, essentially providing the performance of a DFB...
Quantum-Dot Lasers’ Performance Makes Great Gains
Jan 1, 2003 — The evolution of laser diode design has proved critical to the advancement of low-cost, high-performance transmitters for telecom and datacom networks, especially in light of the downturn in the optical communications market. With increased demand...
ESI Receives Semiconductor Laser Order
Oct 30, 2002 — PORTLAND, Ore., Sept. 30 -- Electro Scientific Industries Inc. (ESI) announced that Global Testing Corp. has placed an order for 300 mm semiconductor laser processing equipment to be installed at its facility in Hsin Chu, Taiwan. The equipment will...
Aculight Corp. Wins Laser Research Contract
Oct 1, 2002 — Aculight Corp. of Bothell, Wash., will investigate new semiconductor and fiber laser technologies under an 18-month, $2.3 million contract from the US Air Force Research Laboratory at Kirtland Air Force Base in Albuquerque, N.M. The company's...
Double-Ring Laser Increases Tunability
Aug 1, 2002 — Wavelength-tunable semiconductor lasers incorporating sampled-grating distributed Bragg reflector or superstructure-grating distributed Bragg reflector designs are boosting the capacity and flexibility of optical networks. Researchers in California...
Coherent Solid-State Lasers Enable Oscar Award-Winning
Jul 1, 2002 — Santa Clara, Calif., April 29, 2002 – Coherent, Inc.’s Compass 315M and Sapphire 460-10 solid-state lasers are at the heart of the Oscar award-winning ARRILASER. Developed by Arnold & Richter Cinetechnik (ARRI) and the Fraunhofer Institute of...
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June 2024
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