Solid state frequency conversion technology for remote sensing

Conference · Fri Jul 01 04:00:00 EDT 1994

OSTI ID:10183778

Velsko, S P; Webb, M S; Cook, W M; Neuman, W A

Long range remote sensing from airborne or other highly mobile platforms will require high average power tunable radiation from very compact and efficient laser systems. The solid state laser pumped optical parametric oscillator (OPO) has emerged as a leading candidate for such high average power, widely tunable sources. In contrast to laboratory systems, efficiency and simplicity can be the decisive issues which determine the practicality of a particular airborne remote sensing application. The recent advent of diode laser pumped solid state lasers has produced high average power OPO pump sources which are themselves both compact and efficient. However, parametric oscillator technology which can efficiently convert the average powers provided by these pump sources remains to be demonstrated. In addition to the average power requirement, many airborne long range sensing tasks will require a high degree of frequency multiplexing to disentangle data from multiple chemical species. A key advantage in system simplicity can be obtained, for example, if a single OPO can produce easily controlled multispectral output. In this paper the authors address several topics pertaining to the conversion efficiency, power handling, and multispectral capabilities of OPOs which they are currently investigating. In Section 2, single pulse conversion efficiency issues are addressed, while average power effects are treated in Section 3. Section 4 is concerned with multispectral performance of a single OPO. The last section contains a short summary and some concluding remarks.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10183778
• Report Number(s): UCRL-JC--118150; CONF-9404162--11; ON: DE94019102
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002
440700
47 OTHER INSTRUMENTATION
DESIGN
GEOPHYSICAL AND METEOROLOGICAL INSTRUMENTATION
LASERS AND MASERS
PARAMETRIC OSCILLATORS
REMOTE SENSING
SOLID STATE LASERS