JMAR Britelight Laser Selected for Special Applications.

SAN DIEGO -- JMAR Technologies, Inc. (NASDAQ:JMAR)

--High Power Solid State Laser Selected by LLNL for Laser Crystal Conditioning

--Britelight(TM) Laser Improves State-of-the-Art Bio-Detection

JMAR Technologies, Inc. (NASDAQ:JMAR) reports that its proprietary Britelight(TM) laser is being applied to leading edge applications by two of its customers. Lawrence Livermore National Laboratory (LLNL) has awarded a contract to JMAR to supply its Britelight(TM) laser to condition laser crystals used by the National Ignition Facility, a 192-beam laser system under construction at LLNL. Separately, as part of an SBIR research project, OPOTEK, Inc. reports success in using the Britelight(TM) laser with an OPOTEK doubler to increase bio-detection throughput.

JMAR's Research Division General Manager, Dr. Scott Bloom, said "We are pleased that our Britelight(TM) laser meets LLNL's stringent requirements for beam quality, pulse energy, short pulse width, and high repetition rate. Our laser will be used by LLNL to condition and extend the life of the high power frequency conversion crystals used by the National Ignition Facility.

"The unique features of our lasers are also being applied to other challenging, high power applications. For OPOTEK, JMAR's Britelight laser has opened up two new biological applications for their optical parametric oscillator technology. The first, biological mass spectrometry using Matrix Assisted Laser Desorption and Ionization, or MALDI, can be used for rapid screening and identification of microorganisms. The second application is single-particle bioaerosol spectrometry, allowing rapid, sensitive, and selective detection of bio-warfare agents in real-time - an application that demands high laser repetition-rate."

Referring to these new uses, OPOTEK Technical Director, Dr. Rhett Barnes said, "These applications, as well as a variety of spectroscopic mapping and high throughput, high data-rate analysis techniques are opened up to us by utilizing JMAR's unmatched pump laser design."

Ronald A. Walrod, Chief Executive Officer said "We developed and refined this unique, high power solid state laser as part of our X-ray lithography program. Since the first of the year, we have been evaluating opportunities to commercialize this laser as a standalone product and it has already proved its superiority in several applications. Although the Britelight will continue to be a key element of our soft X-ray light source, we are now offering the laser as a separate product."

Headquartered in San Diego, California, JMAR Technologies, Inc., develops, manufactures, and supports advanced laser, sensor, and custom systems for applications in the semiconductor, biotech, homeland security, nanotechnology and utility infrastructure markets. JMAR's operations include its high brightness lasers and laser-produced plasma technology at its Research Division in San Diego, California; its Systems Division in Burlington, Vermont, which serves as JMAR's product design and manufacturing arm, carrying out engineering, production, and integration; and its Microelectronics Division, based in Sacramento, California, where JMAR provides process integration and maintenance support for the U.S. Government's Defense Microelectronics Activity semiconductor fabrication facility.

This news release contains certain "forward-looking statements." Forward-looking statements are based on current expectations and assumptions and are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, and many of which are beyond the Company's control. Actual results could differ materially from these forward-looking statements as a result of a number of factors, including delays in completion of the X-ray microscope, X-ray Nano Probe and BioSentry(TM) prototypes and transition to production units, failure of the technology to perform as predicted, competition from alternative technologies, uncertainties as to the size of the market, cost and margins, failure to obtain market acceptance, the lack of availability of critical components, the degree of protection from future patents and the possibility of infringement of patents issued to others, and other unforeseen issues involved in the development or acquisition of new products or technologies and other risks detailed in the Company's 2003 Form 10-K filed with the SEC. Given these risks and uncertainties, investors are cautioned not to place undue reliance on such forward-looking statements and no assurances can be given that such statements will be achieved. JMAR Technologies, Inc. does not assume any duty to publicly update or revise the material contained herein.