About Us

Corporate History:

Advanced Photonic Sciences, LLC (APSci), was founded in 2003 by Dr. David C. Brown, a renowned expert in solid-state lasers. We are located in a modern research and development and manufacturing facility in Choconut, PA, Friendsville Township, a part of the beautiful Endless Mountain Region of northeastern Pennsylvania. Prior to 2017, our company operated as Snake Creek Lasers, LLC.

Founders Biography:

David C. Brown, Ph.D., is a renowned laser physicist with over fourty years of experience in optics and lasers who has made seminal contributions to the field. He has worked at senior research positions in projects at General Electric in Syracuse, Schenectady, and Binghamton, all in NY, at The Laboratory for Laser Energetics at The University of Rochester in Rochester, NY, and at Northrop-Grumman in Redondo Beach, CA. At GE, he worked on high power Nd:Glass disk amplifiers as well as high power kilowatt slab (total-internal-reflection) slab lasers. While at The University of Rochester he was one of the principal laser designers and contributed to the demonstration of state-of-the-art high-peak-power Nd:Glass laser systems, culminating in the demonstration of the Omega 24 beam inertial-confinement laser system in 1981.

He is the founder and CTO of Snake Creek Lasers (Now Advanced Photonic Sciences), a small high technology laser company located in Friendsville, PA. Specializing in miniature solid-state laser devices and cryogenic laser technology, the company holds four world records for cryogenic laser performance, and recently delivered an advanced closed-cycle cryogenic laser to the Russian Academy of Sciences. Snake Creek lasers enjoys a number of ongoing university and industrial collaborations involving optical materials, diode-pumped solid-state lasers, and high optical damage threshold coating technology.

Dr. Brown is a frequent contributor  to Optical Society of America, IEEE, and several European laser journals, is a scientific reviewer for sixteen laser and optics journals, and is an expert reviewer of cryogenic laser technology for three European governments. Recently, he published two groundbreaking invited review papers showing the path to enabling high average power Petawatt (ultrafast) lasers using cryogenic laser technology.

A pioneer in cryogenic laser technology and the understanding of thermal effects in high power fiber lasers and cryogenic lasers, and an expert laser designer including design for manufacturing, his many contributions to the field may be found in his web pages on LinkedIn.com, ResearchGate.com, and Google Scholar.

Our Offerings:

MicroGreen and MiniGreen Lasers:

Our company invented and began manufacturing green (532 nm) diode-pumped solid-state microlasers (MicroGreenTM and MiniGreenTM) in 2005. Many thousands of devices are currently in operation worldwide and used for pointing, illumination, guidance, and many other applications in the industrial, bio-medical, scientific, and military marketplaces.

New XG Microlaser Series:

APSci has superb research and development capabilities and facilities, and has invented a new generation of long-term stable microlasers with much improved operating characteristics. The first of these new CW devices, the MicroGreen-XG-532, was introduced to the marketplace in 2016. During 2017-2018, we will introduce a number of new CW microlasers operating at wavelengths of 532, 946, 1064, 1319, and 1550 nm.

Precision Laser Modules:

APSci also manufactures a number of standard and custom specialized laser modules that can incorporate power supplies, beam collimators and expanders, and boresight control. Current production modules address the materials handling and medical laser industries. During 2017, we will introduce our new iHXG laser module, an innovative design that fully incorporates any of our XG microlasers directly into a heatsink housing. This new laser module can be easily customized to provide for an integrated power supply, thermoelectric-cooler, and collimating lens. APSci will design, develop, and manufacture modules on a custom basis for other organizations. Please visit our Modules and Custom Modules and Lasers pages for more details.

Cryogenic Lasers:

APSci is also a pioneer in the development of cryogenic solid-state lasers, and holds four world-records for Yb:YAG cryogenic laser performance (see our Publications page for reprints of papers). APSci is currently finishing the commissioning of our Thor-300 Yb:YAG cryogenic laser amplification system. During 2017-2018, we will begin to offer a number of new cryogenic laser products, including bare composite laser disks, disks mounted in easy to use heatsink assemblies, and disk assemblies with integrated heatsink and LN2 cooling systems.

Laser Components:

APSci continues to offer miniature power supplies, circular and rectangular heatsinks. thermistors, and thermoelectric coolers, shown on our Laser Components page. In 2017-2018 we will introduce a number of new ambient temperature offerings, including a variety of thick and thin laser disks, laser disks mounted in heatsink assemblies, and complete diode-pumped solid-state laser pump chambers. These new pump chambers may be supplied with or without diode pump sources, TEC crystal cooling, with or without a diode FAC lens for discrete diodes, integrated thermistors, and with active or passive cooling.

Laser Materials:

Our company has a robust laser materials research program, with a complete spectroscopy laboratory used to characterize new and legacy laser and nonlinear materials. Absorption and emission cross-sections can be obtained at room temperature and cryogenic temperatures down to about 77 K. Since 2010, we have and continue to collaborate with Clemson University in investigating new materials using the method of hydrothermal growth. Our collaboration has produced and investigated a number of novel new materials and techniques. One example is the first growth of an epitaxial like Sm:YAG layer on Nd:YAG for the purpose of suppressing amplified spontaneous emission (ASE) and parasitic oscillations. This technique may be applied to bulk solid-state laser elements such as rods, slabs, and thin and thick disks, as well as to crystalline fibers. We have also investigated the nonlinear materials KTP, RBBF, and KBBF, as well as co-doped Cr, Nd:YAG and Cr, Yb:YAG. Other laser materials include many of the sesquioxides including Yb:Lu2O3 at room and cryogenic temperatures, Ho:Lu2O3, Tm:Lu2O3, Er:Lu2O3, Nd:Lu2O3, Sm:Lu2O3, Ce:Lu2O3, and Yb:LuAG at room and cryogenic temperatures.

Photograph of Lu2O3 Host Laser Materials

APSci maintains an ever expanding database of absorption data for scores of laser materials. Publication quality plots of absorption coefficient or cross-sections, as well as the raw data for many laser materials can be found in our Laser Materials page. Additional data regarding thermal properties, including thermal conductivity, thermal expansion coefficient, and thermo-optic coefficients as a function of temperature are also included in our database and will be added to our offerings at a later date.


Our spectroscopic absorption measurements are enabled using a high resolution Shimadzu SolidSpec-3700DUV spectrophotometer with 0.1 nm resolution, and covering the spectral range of 175 to 2600 nm, as well as a 0.05 nm resolution Yokogawa Optical Spectrum Analyzer (OSA). Our spectrophotometer can be used to obtain absorption measurements from room temperature down to about 77 K. Emission measurements are obtained using a Horiba-Yvon-Jobin HR1000 monochromator with a range from 300-1700 nm.

APSci routinely supplies spectroscopic data to collaborators and customers. We can provide one-off or routine spectral measurements of most solid-state laser materials, including doping ion calibration runs and standard absorption spectra quality-control scans.